Joshua 2:1-14
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 harlot whose name was Rahab, and lodged there.
And it was told the king of Jericho, "Behold, certain men of Israel have come here tonight to search out the land." Then the king of Jericho sent to Rahab, saying, "Bring forth the men that have come to you, who entered your house; for they have come to search out all the land."
But the woman had taken the two men and hidden them; and she said, "True, men came to me, but I did not know where they came from; and when the gate was to be closed, at dark, the men went out; where the men went I do not know; pursue them quickly, for you will overtake them." But she had brought them up to the roof, and hid them with the stalks of flax which she had laid in order on the roof.
So the men pursued after them on the way to the Jordan as far as the fords; and as soon as the pursuers had gone out, the gate was shut. Before they lay down, she came up to them on the roof, 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. 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 that were beyond the Jordan, to Sihon and Og, whom you utterly destroyed. And as soon as we heard it, our hearts melted, and there was no courage left in any man, because of you; for the LORD your God is he who is God in heaven above and on earth beneath. Now then, 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, and save alive my father and mother, my brothers and sisters, and all who belong to them, and deliver our lives from death."
And the men said to her, "Our life for yours! If you do not tell this business of ours, then we will deal kindly and faithfully with you when the LORD gives us the land."