The Scarlet Thread: Rahab’s Story

If you were with us in Part 1, you’ll remember that Matthew opens his gospel with something most us are tempted to skip: a genealogy. A long list of names that, at first glance, usually feels like the biblical equivalent of reading the phone book.

But Matthew isn’t just listing ancestors with names that are impossible to pronounce (no offense, Shealtiel). He’s making a point.

In a culture where genealogies typically highlighted men—patriarchs, fathers, tribal leaders—Matthew does something surprising. He includes five women. And not the safe, predictable matriarchs we might expect. Women whose stories are complicated. Women whose lives carry scandal, courage, and unexpected faith. Each one reveals something about the kind of Savior Jesus would be.

In Part 1, we met Tamar—a woman who refused to disappear into the fog of injustice. Through bold, unconventional action, she confronted wrongdoing and preserved the family line. Tamar showed us that sometimes righteousness looks messy (in her case, slightly icky), and that God often works through courage that others misunderstand.

Now we meet a woman named Rahab. A Gentile. A prostitute. A woman living inside the enemy’s city walls. And her story begins in Jericho.

Rahab lived in a fortified city standing directly in the path of Israel’s promised future. Jericho was the first major obstacle as the Israelites entered the land God had promised them after generations of slavery and wilderness wandering. Joshua, Israel’s leader after the death of Moses, sends two spies into the city to scout it out.

And where do they end up?

In Rahab’s house.

Now Scripture doesn’t try to hide Rahab’s profession. She is described plainly as a prostitute. No euphemisms. No attempts to tidy up the story for polite, pearl-clutching readers. She lived on the margins of society—morally questionable by Israel’s standards and culturally outside of God’s covenant people.

But here’s something interesting (if you know me, of course it’s going to be a word study):

Rahab’s name in Hebrew (“Rachav”) means “he widens.” It carries this sense of making space, enlarging, opening something up. And in a way that only God could orchestrate, Rahab’s story becomes exactly that. A widening of who belongs in God’s redemptive plan.

All because Rahab heard a rumor.

News travels quickly when miracles are involved, and Jericho had been buzzing with stories about Israel’s God. The Red Sea. The defeat of powerful kings. A wandering nation protected by a God who couldn’t be stopped by man or nature. Rahab had heard the reports. And unlike the rest of her city, she believed them.

When the spies arrive, the king of Jericho quickly catches wind that Israelites have infiltrated the city. Soldiers are sent to Rahab’s house, demanding she turn the men over. But Rahab does something that changes everything.

But the woman had taken the two men and hidden them. She said, “Yes, the men came to me, but I did not know where they had come from. At dusk, when it was time to close the city gate, they left. I don’t know which way they went. Go after them quickly. You may catch up with them.” (But she had taken them up to the roof and hidden them under the stalks of flax she had laid out on the roof.)

Joshua 2:4-6

She sends the king’s men in the wrong direction while the spies hide on her roof.

Let’s stop here for a moment and think about Rahab’s choice:

She could protect her city. She could protect her reputation (what little of it was left).

OR she could protect the God she believed in, even though she had never seen Him for herself.

She chose faith.

Before helping the spies escape, Rahab makes a request:

“I know that the Lord has given you this land. . .the Lord your God is God in heaven above and on the earth below. Now then, please swear to me by the Lord that you will show kindness to my family, because I have shown kindness to you. Give me a sure sign that you will spare the lives of my father and mother, my brothers and sisters, and all who belong to them—and that you will save us from death.”

Joshua 2:9,11-13, emphasis mine

She asks them to swear that when Israel conquers the city, her family will be spared. But did you catch what she said in the very beginning?

Rahab doesn’t say, “Gee, I hope your God is powerful.”

She says, “I know.”

A foreigner. A prostitute. A citizen of the enemy city. And yet she confesses the sovereignty of Israel’s God more clearly than most of the Israelites had in the wilderness. Faith really shows up in the most unexpected places, doesn’t it?

But notice something else about Rahab’s words. When she speaks to the spies, she refers to “the Lord your God.” Not my God or our God. Your God. It’s the language of someone standing just outside the covenant line—someone who believes in His power but isn’t sure she belongs to Him yet. Maybe Rahab assumed her past disqualified her. Maybe she thought a foreign prostitute couldn’t possibly claim Israel’s holy God as her own. And yet, even while she stands at a self-imposed distance, she acts in faith. It’s a quiet reminder that sometimes people begin walking toward God long before they realize they’ve already become welcomed by Him.

The spies agree to her request and give her one very specific instruction: she has to hang a scarlet cord from her window. Her house was built into Jericho’s city wall, and that cord would mark it as the one place that would be spared when the city fell.

A scarlet cord. A red thread hanging in the window of a doomed city.

When the walls of Jericho eventually collapsed (Joshua 6), every structure fell—except Rahab’s house. Her home became the only safe place in the entire city, and everyone inside it was spared. Her family survived because one woman believed God and acted on it.

One detail that’s easy to miss in this story is that the spies themselves are never named. Not once. Scripture doesn’t tell us who they were, where they came from, or what tribe they belonged to. Their identities fade quietly into the background of the narrative. But Rahab’s name? It’s repeated, remembered, recorded in Joshua, Hebrews, and James. Maybe that’s intentional. Maybe the point of the story was never the bravery of the spies. Maybe the real courage worth remembering was the woman inside Jericho who chose faith when everyone around her chose fear. Faith isn’t meant to stay hidden inside our hearts. Faith moves! It takes risks! It acts!

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 direction?

James 2:25

In other words, Rahab didn’t just believe something about God. She did something about it.

And here’s the part that makes the scarlet thread even more beautiful. Rahab didn’t just survive Jericho. She joined Israel. She became part of the people of God. Eventually, she married a man named Salmon. Together, they had a son named Boaz.

Yep, THAT Boaz! The same Boaz who will later marry Ruth. The same Boaz who becomes part of the family line leading to King David, and ultimately to Jesus! A former prostitute from Jericho became the great-great-grandmother of kings!

When Matthew writes Jesus’s genealogy, he makes sure we see her name:

Salmon the father of Boaz, whose mother was Rahab…

Matthew 1:5

Rahab’s presence in the family tree tells us something profound about the heart of God: your past doesn’t disqualify you from God’s purposes.

I feel like I need to say that one more time for you. YOUR PAST DOESN’T DISQUALIFY YOU FROM GOD’S PURPOSES.

Rahab’s reputation didn’t scare God away! Her nationality didn’t exclude her. Her city’s destruction didn’t erase her future. God saw her faith. And just like her name indicates, He widened the story. A woman society would have dismissed became the protector of an entire household. That’s the kind of redemption God writes.

Rahab’s story reminds us:

• Faith has to eventually move from belief to action.

• Courage often looks like split-second obedience.

• Your past doesn’t disqualify you from God’s future.

• God’s grace is wide enough to redeem anyone.

Sometimes the most defining moments of faith don’t come with weeks of preparation. They come in a single moment. One decision. A choice to trust God when everything around you says not to.

Rahab had zero guarantee that the spies would keep their word. She had no proof that Jericho’s walls would fall. But she acted on what he believed to be true about God. And that act of faith placed her inside the scarlet thread of redemption that would eventually lead to Christ.

In Part 3, we’ll meet a woman whose courage looked very different. She didn’t hide spies or confront injustice. Instead, she left everything familiar behind—and found herself written into eternity.

Father God, give us the kind of faith that moves. Not just belief in our minds, but courage in our actions. When defining moments come, help us recognize them and respond with obedience. Remind us that our past doesn’t determine our future in Your hands. Where shame tries to rewrite the story, speak redemption. Where fear tries to silence us, give us courage. Teach us to trust You beyond reputation, beyond comfort, beyond what others might think. And widen our hearts to believe that Your grace can redeem every story. Amen.