The Scarlet Cord: When Simple Faith Changes Everything
Have you ever felt like you’re not enough for God to use? Maybe your past is too messy, your knowledge too limited, or your faith too small. If so, the story of an unlikely hero from the book of Joshua might completely reshape how you see yourself in God’s story.
An Impossible Candidate
Picture this: a Canaanite woman working as a prostitute in the fortified city of Jericho. The Canaanites were known for their wickedness—so evil that God had decreed their complete destruction. She’s a woman in a patriarchal society, a sex worker by trade, and the first words recorded from her mouth in Scripture are a lie.
By every measure, she seems like the last person who would appear in what Hebrews 11 calls the “Hall of Faith.” Yet there she is: Rahab, whose simple faith would not only save her life but would weave her into the very lineage of Jesus Christ himself.
What Faith Really Looks Like
When two Israelite spies entered Jericho to scout the land God had promised His people, they were terrible at their job. Immediately discovered, they found themselves hiding on the roof of Rahab’s house, covered by stalks of flax, while the king’s soldiers searched for them.
But before the spies settled in for the night, Rahab revealed something astonishing. Her theology wasn’t sophisticated. She had no formal training. She hadn’t studied under Moses or heard the Ten Commandments at Sinai. Yet she declared with absolute confidence:
“I know that the Lord has given you the land. We have heard how the Lord dried up the water of the Red Sea before you when you came out of Egypt. Our hearts melted, and there was no spirit left in any man because of you. For the Lord your God, He is God in the heavens above and on the earth beneath.”
Think about what Rahab believed with such limited information:
- The Lord exists and is the one true God
- The Lord is faithful to His promises
- The Lord’s judgment is coming and cannot be stopped
- Only God’s mercy can save
She spoke of Israel’s conquest as though it had already happened, even though the Israelite army was camped across the Jordan River at a place historically associated with Israel’s failures. The massive walls of Jericho still stood strong. Yet Rahab declared with certainty: “The Lord has given you the land.”
The Size of Faith Matters Less Than Its Object
Here’s what makes Rahab’s story so encouraging: her faith wasn’t impressive because of its size or sophistication. It was sufficient because of the One in whom she placed it.
She knew one thing to do: tie a scarlet cord in her window. That’s it. Would that cord structurally reinforce the walls when they came tumbling down? Of course not. But she tied it anyway, immediately obedient to the little light she had.
One pastor noted that “Rahab was more faithful to the little light she had than Israel was to the blazing light they had received.” While God’s chosen people often doubted and disobeyed despite witnessing miracle after miracle, this Canaanite woman believed and acted on what little she knew.
If you feel like your faith is small, take heart. The question isn’t whether you have great faith—it’s whether your faith is in a great God. Jesus is mighty to save, and He is sufficient. Your simple trust in Him is enough.
The Invitation to Others
Rahab didn’t keep salvation to herself. She gathered her father, mother, brothers, sisters, and everyone in her household into her home. She invited her entire sphere of influence into God’s plan of rescue.
We all have an “oikos”—a Greek word meaning household or sphere of influence. These are the people you work with, live with, exercise with, or simply do life alongside. God has strategically placed you in relationship with specific people, and like Rahab, you have the opportunity to invite them into the story of faith.
Maybe you’re reading this because someone in your sphere of influence invited you to church or shared their faith with you. That’s the principle in action.
The Scarlet Thread Through History
The scarlet cord Rahab hung in her window connects to a stunning pattern woven throughout Scripture—the scarlet cord of salvation:
- In Genesis, God covered Adam and Eve’s shame with animal skins
- Abraham found a ram caught in the thicket to substitute for Isaac
- At Passover, lamb’s blood on the doorposts saved the firstborn
- The Day of Atonement required a sacrificial lamb’s blood
- Isaiah prophesied of a suffering servant whose blood would heal
All of it points to Jesus, whose blood was shed as the price for our redemption, turning God’s wrath into favor.
And remarkably, when archaeologists discovered the ruins of ancient Jericho, they found that the walls had fallen straight down—except for one section that remained standing. One small portion of the wall, right where tradition places Rahab’s house, stood firm.
A Legacy Beyond Imagination
The most stunning part of Rahab’s story is what happened after. This Canaanite prostitute married Salmon, a prince of Judah. Their son was Boaz, who would marry another foreigner—Ruth the Moabite. Boaz and Ruth had a son named Obed, who fathered Jesse, who fathered King David.
Read that again: Rahab is in the direct lineage of King David and, ultimately, Jesus the Messiah.
When you open Matthew’s gospel, you’ll find four women mentioned in Jesus’ genealogy—all foreigners, all connected to some form of sexual scandal or irregularity. God intentionally included them in the story of redemption. Rahab, the Canaanite prostitute, became a great-great-grandmother of the King of Kings.
Your Legacy of Faith
When God saves you and you begin trusting Him not just for salvation but for daily life, something extraordinary happens: He gives you a legacy. You become a link in a chain of faith that extends beyond what you can see.
Maybe you’re part of a long line of believers, carrying forward a heritage of faithfulness. That’s beautiful. But maybe you’re the first link—the first in your family to trust Jesus. That’s equally powerful, because God is just beginning a story through you that will ripple into eternity in ways you cannot now imagine.
Your simple obedience today, your small acts of faith, your decision to trust God with what you cannot control—these matter more than you know. God specializes in taking unlikely candidates and writing stunning stories of redemption through their lives.
The question isn’t whether you’re qualified enough, educated enough, or good enough. The question is: Will you tie the scarlet cord? Will you trust the God who saves, even when you can’t see how it will all work out?
Rahab did. And her faith changed everything.
This content was created with AI assistance based on a recent sermon preached at Cross+Crown and reviewed by church staff. You can access the sermon here.