Character, confession, and covenant in the story of Rahab. One of the mothers of Jesus in the genaology in Matthew 1.

And Joshua the son of Nun sent two men secretly from Shittim as spies, saying, “Go, view the land, especially Jericho.” And they went and came into the house of a prostitute whose name was Rahab and lodged there. 2 And it was told to the king of Jericho, “Behold, men of Israel have come here tonight to search out the land.” 3 Then the king of Jericho sent to Rahab, saying, “Bring out the men who have come to you, who entered your house, for they have come to search out all the land.” 4 But the woman had taken the two men and hidden them. And she said, “True, the men came to me, but I did not know where they were from. 5 And when the gate was about to be closed at dark, the men went out. I do not know where the men went. Pursue them quickly, for you will overtake them.” 6 But she had brought them up to the roof and hid them with the stalks of flax that she had laid in order on the roof. 7 So the men pursued after them on the way to the Jordan as far as the fords. And the gate was shut as soon as the pursuers had gone out.

8 Before the men lay down, she came up to them on the roof 9 and said to the men, “I know that the Lord has given you the land, and that the fear of you has fallen upon us, and that all the inhabitants of the land melt away before you. 10 For we have heard how the Lord dried up the water of the Red Sea before you when you came out of Egypt, and what you did to the two kings of the Amorites who were beyond the Jordan, to Sihon and Og, whom you devoted to destruction. 11 And as soon as we heard it, 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. 12 Now then, please swear to me by the Lord that, as I have dealt kindly with you, you also will deal kindly with my father's house, and give me a sure sign 13 that you will save alive my father and mother, my brothers and sisters, and all who belong to them, and deliver our lives from death.” 14 And the men said to her, “Our life for yours even to death! If you do not tell this business of ours, then when the Lord gives us the land we will deal kindly and faithfully with you.”

15 Then she let them down by a rope through the window, for her house was built into the city wall, so that she lived in the wall....

But to the two men who had spied out the land, Joshua said, “Go into the prostitute's house and bring out from there the woman and all who belong to her, as you swore to her.” 23 So the young men who had been spies went in and brought out Rahab and her father and mother and brothers and all who belonged to her. And they brought all her relatives and put them outside the camp of Israel. 24 And they burned the city with fire, and everything in it. Only the silver and gold, and the vessels of bronze and of iron, they put into the treasury of the house of the Lord. 25 But Rahab the prostitute and her father's household and all who belonged to her, Joshua saved alive. And she has lived in Israel to this day, because she hid the messengers whom Joshua sent to spy out Jericho. (Joshua 2.11-15, 6.22-25 ESV)