Joshua 2:1-2 - "And they went and came into the house of a prostitute ... and lodged there." Uh, really? Seems inappropriate or unwise or something, but, as we'll see, it was pretty fortuitous. I wonder what sort of logic it was that led them to stay with a prostitute? Verse 2 would imply that they weren't too careful in their spying the land, the King learned of their presence pretty easily. Were they careless? Cocky? Whatever the situation, God will deliver them by the hands of a prostitute, perhaps a prostitute that they had visited with less than pure motives. That would be like God, right? Go searching for sin and find deliverance instead. I would guess that if that were the case, though, it would have been mentioned.
Joshua 2:8 - Sleeping on the roof!
Joshua 2:10-11 - Notice that Rahab isn't afraid of the Israelites, she's afraid of The Lord. She's heard, not what Israel has done but what God has done. She even proclaims here "for the Lord your God, he is God in the heavens above and on the earth beneath" and that proclamation will save her.
Joshua 2:16 - Three days in the hills plus whatever time they were in Jericho (a day at least it would seem). I wonder, did Joshua think they were lost or captured?
Joshua 2:17-21 - It's always a good idea to be clear about the terms of any agreement. :-D
And don't you love that she was not only involved in deliverance then, but she (yes, a prostitute) is found in the lineage of Jesus, so was instrumental in the ultimate deliverance! (Matt 1:5)
Where else were they going to stay, the Jericho Ho-Jo? :-) It may have been the safest place to stay if they had to high-tail it out of town. The authorities were already on their tails.