Rahab: When an Outsider Becomes Family

From the Inside to the Outside

For several weeks now, we've been walking through Genesis, watching God work through people who had every reason to disqualify themselves. We met Abraham, a man who lied to protect himself, who laughed at God's promise, who tried to force God's timeline. We met Jacob, a deceiver who stole his brother's future, who spent twenty years reaping what he had sown, who wrestled with God and walked away limping but renamed. We met Judah, a man who sold his own flesh and blood into slavery, who abandoned his daughter-in-law to a hopeless future, who nearly had her executed to cover his own sin.

And through every single one of them, God kept building something. These were insiders. People born into the covenant. People who carried the promise in their bloodline even when they didn't carry it well in their lives.

Today we leave Genesis. We move into the book of Joshua. And the first significant person we meet in this new chapter of Israel's story is someone who was never supposed to be in it at all.

Her name is Rahab. And her story teaches us something critical about the nature of faith itself.

The Wrong Side of the Promise

But before we get to Rahab, we need to understand how we got here. After Judah's story in Genesis, the people of Israel end up in Egypt. What starts as a refuge during famine becomes slavery. For four hundred years, Israel is enslaved. Then God raises up Moses, sends the plagues, parts the Red Sea, and leads Israel out. They receive the Law at Mount Sinai. And then, because of their unbelief and disobedience, they wander in the wilderness for forty years.

Now, at the beginning of Joshua, that forty-year wait is over. Moses has died. Joshua has taken leadership. And Israel is camped on the east side of the Jordan River, looking across at the land God promised to Abraham centuries earlier. The promised land. Canaan.

But here's the problem. There are people already living in that land. The Canaanites. For forty years, as Israel wandered in the wilderness, the Canaanites watched. They heard what happened in Egypt. They heard about the plagues, the Passover, the Red Sea splitting open. They heard about Sihon and Og, two Amorite kings whom Israel completely destroyed.

This is the context we need to understand Rahab's story. She is not simply unfamiliar with Israel's God. She is on the other side of the promise. She lives in Jericho, the first major city Israel will conquer. She is a Canaanite. She has every cultural, ethnic, and political reason to be God's enemy. She lives behind the walls of the city that is about to be destroyed. She is on the wrong side of every line that exists.

And she is a prostitute. That's not a detail the text hides or softens. Joshua 2:1 identifies her that way immediately, and every subsequent reference to her in Scripture uses that descriptor. She lives in the wall of the city, which tells us something about her place in Jericho's social order. She's not a person with options. She's a person who has learned to survive.

The Spies Arrive

Joshua sends two spies into Jericho before the invasion begins. Strategically, Jericho is the gateway to Canaan from the east. Whoever holds Jericho controls the approaches to the central hill country. It's the key to the entire conquest.

The spies end up at Rahab's house. And that makes sense when we think about it. Her house would have had anonymous traffic constantly. Travelers, soldiers, merchants. No one would think twice about two more strangers showing up. It's the perfect cover.

But someone tips off the king of Jericho. Soldiers come looking for the spies. And this is where Rahab makes her first choice. She hides the spies under stalks of flax drying on her roof. Then she lies to the soldiers about where they went, sending them off in the wrong direction.

Once the soldiers are gone, she goes up to the roof to talk to the men she just risked her life to protect. And what she says is remarkable.

Joshua 2:8-11: "Before the spies lay down for the night, she came up to them on the roof and said to them, 'I know that the Lord has given you this land and that a great fear of you has fallen on us, so that all who live in this country are melting in fear because of you. We have heard how the Lord dried up the water of the Red Sea for you when you came out of Egypt, and what you did to Sihon and Og, the two kings of the Amorites east of the Jordan, whom you completely destroyed. When we heard of it, our hearts melted in fear and everyone's courage failed because of you, for the Lord your God is God in heaven above and on the earth below.'"

Stop and let that sink in for a moment. Every person in Jericho heard the same reports Rahab heard. The whole city knew about the Red Sea. The whole city knew about Sihon and Og. Rahab herself says it: "Our hearts melted in fear and everyone's courage failed." The entire population of Jericho received the same information.

But Rahab does something with that information that her neighbors don't do. She draws a conclusion they won't draw. She says out loud what the evidence is pointing to: "The Lord your God is God in heaven above and on the earth below." That's a declaration. That's a confession of faith. She doesn't have a personal history with God. She doesn't have the Torah. She doesn't have a prophet or a priest or a covenant. She has secondhand reports about what God did for somebody else. And she decides that's enough to act on.

This is critical for us to understand. Faith is not waiting until we have enough information to be certain. Rahab had exactly what we have: a story about what God has done. The exodus. The Red Sea. The victories over God's enemies. She heard the testimony and believed it.

The Scarlet Cord

Rahab and the spies make a deal. She's saved their lives. Now she asks them to save hers and her family's. The spies agree, but they give her specific instructions.

Joshua 2:17-19 and 21: "Now the men had said to her, 'This oath you made us swear will not be binding on us unless, when we enter the land, you have tied this scarlet cord in the window through which you let us down, and unless you have brought your father and mother, your brothers and all your family into your house. If any of them go outside your house into the street, their blood will be on their own head; we will not be responsible. As for those who are in the house with you, their blood will be on our head if a hand is laid on them.' She said, 'Agreed. Let it be as you say.' So she sent them away, and they departed. And she tied the scarlet cord in the window."

Notice the order of events. She doesn't wait to see if the plan works. She doesn't tie the cord after the walls fall to verify the spies kept their word. She ties it immediately. While the city is still standing. While nothing has changed yet. While there is no visible evidence that any of this is going to work out.

And that cord in the window is a public statement. Anyone walking past her house can see it. She's not hedging her bets quietly. She's not keeping her options open. She's declaring, in the only way available to her, that she belongs to the God of Israel now. She has changed sides. Before the battle. Before the walls fall. Before she has any proof.

This is what it looks like to bet everything on a promise we cannot yet verify. It looks like tying a scarlet cord in a window in a city that's about to be destroyed. It looks like taking a risk before we see the outcome. It looks like choosing faith when fear would be easier.

And we should note that throughout church history, that scarlet cord has drawn comparisons to the blood of Christ. Just as the blood on the doorposts during Passover saved the Israelites from the angel of death, just as the scarlet cord marked Rahab's house for salvation, the blood of Jesus marks those who belong to Him.

The Wall Falls

What happens next is one of the most famous stories in all of Scripture. Israel crosses the Jordan River. They arrive at Jericho. And for six days, they march around the city in complete silence. On the seventh day, they march around the city seven times. Then the priests blow one long blast. Joshua gives the command. The people shout.

And the walls of Jericho collapse flat.

But not all of them.

Joshua 6:22-23: "Joshua said to the two men who had spied out the land, 'Go into the prostitute's house and bring her out and all who belong to her, in accordance with your oath to her.' So the young men who had done the spying went in and brought out Rahab, her father and mother, her brothers and all who belonged to her. They brought out her entire family and put them in a place outside the camp of Israel."

The walls of Jericho fall flat. Every section of the wall collapses into rubble, except the section where a scarlet cord is hanging in a window. And the first act of the victorious army of Israel is to go retrieve a Canaanite woman and her entire family.

Think about what that means. Rahab came in with nothing. No covenant heritage. No tribal belonging. No ancestral claim on any of these promises. She was born on the wrong side. She lived on the wrong side. She made her living on the wrong side of respectability. And yet she walks out of that destruction holding all the promises of God. She's been grafted in. Adopted. Welcomed. Made part of the family.

And this should speak to anyone who's ever felt like they're starting from too far outside. Maybe we didn't grow up in church. Maybe our family history doesn't include a legacy of faith. Maybe we feel like everyone else knows the songs, knows the language, knows the unwritten rules, and we're just trying to keep up. Rahab knew none of those things. The spies didn't quiz her on Hebrew. They didn't test her theology. They received her faith. They honored her risk. And God welcomed her in.

Rahab in the New Testament

But Rahab's story doesn't end in Joshua. In fact, her real significance shows up much later.

Matthew 1:5: "Salmon the father of Boaz, whose mother was Rahab."

Stop and consider where she's sitting in that genealogy. She's two generations from Boaz, which makes her the great-great-grandmother of King David. She's a direct ancestor of Jesus Christ. A Canaanite woman from Jericho, born outside the covenant, born into a culture marked for judgment, makes her living as a prostitute, and she ends up in the bloodline of the Messiah right alongside Abraham, Jacob, and Judah.

God didn't find a place to tuck her into the margins of His story. He didn't make her a footnote. He put her in the center of it. The royal line, the line that leads to Jesus, runs through Rahab.

But that's not the only place we see Rahab in the New Testament.

Hebrews 11:31: "By faith Rahab the prostitute did not perish with those who were disobedient, because she had given a friendly welcome to the spies."

The writer of Hebrews is composing what we often call the Hall of Faith. Abraham is on it. Jacob is on it. Moses, Noah, Gideon, Samson, David. And right there among them is Rahab. Faith is for outsiders, too. Rahab is not a descendant of Abraham. She has no covenant claim by birth. Yet here she stands among the patriarchs.

And James 2:25: "In the same way, was not even Rahab the prostitute considered righteous for what she did when she gave lodging to the spies and sent them off in a different direction?"

James is making an argument about faith that produces action. And the second example James chooses, right alongside Abraham, is Rahab. A woman who had every reason to stay quiet, stay safe, stay loyal to her own people. But she didn't. She acted on what she believed. She hid the spies. She tied the scarlet cord in the window. She risked everything.

And James says she was considered righteous for what she did. Not just for what she believed. For what she did. Because real faith doesn't stay theoretical. Real faith takes risks.

Four Names, One Story

Let me walk us through the four names we've covered in this series one more time, because together they tell us something we need to hear.

Abraham. A man who doubted and waited and laughed and schemed, but who held on to God's promise even when it took twenty-five years to arrive. God used him to father a nation.

Jacob. A deceiver who stole his brother's blessing, spent twenty years reaping what he sowed, wrestled with God and walked away limping. God renamed him Israel and built the twelve tribes through his sons.

Judah. A man who sold his brother into slavery, abandoned his daughter-in-law, nearly had her executed to cover his own sin. God put the royal line, the line of the Messiah, through him anyway.

And Rahab. An outsider. A Canaanite. A prostitute. A woman who had none of their history, none of their heritage, none of their access to the covenant. She heard one story about what God did at the Red Sea, and she decided that was enough. She hid the spies. She tied the cord. She bet everything on a God she'd only heard about secondhand. And God grafted her into the family tree of Jesus Christ.

There is someone reading this right now who has spent their whole life feeling like they were born on the wrong side of this story. Wrong family. Wrong past. Wrong decisions. Wrong list of mistakes. We've watched other people who seem to carry faith naturally, like they were born into it, like it's effortless for them. And we've wondered if there's really a place at this table for someone who came from outside.

Rahab is our answer. She didn't get born into the right story. She got brave enough to step into it. She heard the testimony about God and she acted on it. And that changed everything.

Faith Is a Verb

Here's what I need us to understand as we close. Faith is a verb. That's the lesson Rahab teaches us. Faith is not just an idea we hold in our heads. It's not just agreeing with certain facts about God. Faith is something we do. It's a knot we tie in a scarlet cord. It's a risk we take before we see the outcome. It's a decision that costs us something.

Many people in Jericho heard the same news Rahab heard. They felt the same fear she felt. Their hearts melted just like hers did. But only Rahab acted. And that's the difference.

Fear without faith leaves us trapped inside the walls waiting for them to fall on us. But faith, real, active, risk-taking faith, hangs the cord in the window and lets God do what only God can do.

So here's the question we need to answer. What's our scarlet cord? What's the action God is calling us to take that requires faith before we see the outcome? Maybe it's choosing forgiveness when we're still hurt. Maybe it's stepping into a relationship when we're afraid of getting hurt again. Maybe it's starting to give when our finances feel tight. Maybe it's serving when we don't feel qualified. Maybe it's simply walking through the doors of a church when we've spent years on the outside convinced we don't belong.

Because that's what Rahab did. And God didn't just save her. He made her part of the story that saves the world.

Small Group Questions

ICE BREAKER QUESTIONS

1. Have you ever felt like an outsider in a group or setting where everyone else seemed to belong naturally? (New school, new job, new church, etc.) What made you feel like you were on the "outside"? What helped you feel welcomed?

2. Tell about a time when you had to take a risk before knowing how it would turn out. Did you act on incomplete information or wait until you had certainty? What influenced your decision?

DISCUSSION QUESTIONS

1. Rahab was a Canaanite prostitute living in Jericho—she was "on the wrong side of the promise" culturally, ethnically, politically, and morally. The sermon said she had "every reason to be God's enemy." When you think about your own story, have you ever felt like you were born on the wrong side—wrong family, wrong past, wrong background? How does Rahab's inclusion in Jesus' family tree speak to that feeling?

2. Everyone in Jericho heard the same reports about the Red Sea and Israel's victories—"our hearts melted in fear and everyone's courage failed" (Joshua 2:9-11). But only Rahab drew the conclusion: "The Lord your God is God in heaven above and on the earth below." Why did she act on the testimony while her neighbors didn't? What's the difference between hearing about God and believing in God?

3. The sermon said: "Faith is not waiting until we have enough information to be certain... Rahab had exactly what we have: a story about what God has done." She only had secondhand reports, no personal history with God, no Scripture, no prophet. How much evidence do you require before you'll act on faith? What are you waiting for that you might already have enough information to act on?

4. Rahab tied the scarlet cord in her window immediately, not after the walls fell or after verifying the spies kept their word (Joshua 2:21). She declared publicly which side she was on before anything changed. What does it cost to publicly declare you belong to God before you see results? Where in your life is God asking you to "tie the cord" before you see the outcome?

5. The scarlet cord has been compared throughout church history to the blood of Christ—a visible mark separating the rescued from the perishing. Just as blood on doorposts saved Israelites at Passover, and the scarlet cord marked Rahab for salvation, Jesus' blood marks those who belong to Him. How does this thread running through Scripture (Passover, scarlet cord, Jesus' blood) deepen your understanding of what it means to be marked as God's own?

6. When the walls fell, every section collapsed into rubble except where the scarlet cord hung (Joshua 6:22-23). Rahab came in with "no covenant heritage, no tribal belonging, no ancestral claim" yet walked out holding all God's promises. For anyone who feels they're starting too far outside—no church background, no family legacy of faith—how does Rahab's story challenge the belief that you need the right credentials to belong to God's family?

7. The church scored 67/100 on "New Christians find friends in our church quickly"—strong but room to grow. The sermon asked: "Are we creating an environment where someone can walk in from the outside, from a completely different world, and find that this family will receive them?" What specific things make newcomers feel welcomed versus excluded in our church? How can we improve in this area?

8. Rahab appears in three significant New Testament passages: Matthew 1:5 (Jesus' genealogy), Hebrews 11:31 (Hall of Faith), and James 2:25 (faith that produces action). God didn't tuck her into the margins—He put her in the center of the story. What does it tell us about God's character that He elevates outsiders rather than just tolerating them? How should this shape the way we treat people on the "outside"?

9. James 2:25 says Rahab "was considered righteous for what she did"—not just what she believed. The sermon emphasized: "Real faith doesn't stay theoretical. Real faith takes risks. Real faith moves." Where is the gap in your life between what you believe and what you actually do? What action is God calling you to take that would demonstrate your faith is real and active?

10. The sermon ended by asking: "What's our scarlet cord? What's the action God is calling us to take that requires faith before we see the outcome?" This could be forgiveness, relationship risk, financial giving, serving despite feeling unqualified, or simply walking through church doors as an outsider. What's your specific scarlet cord moment right now? What's holding you back from tying it in the window?