There sure are a lot of prostitutes in the Bible (Joshua, Chapter 2) - It's no secret that prostitution is one of the oldest professions.  There will always be a demand for sex, no matter what legal restrictions are put on it. 

In this case, the prostitute becomes a central character in the story, and there's a little foreshadowing to show that she's going to play a part later on as well.

Joshua sent out two scouts to survey the land, and especially Jericho, the walled city.  While in Jericho, the scouts went into a harlot named Rahab's house, where they "came in unto her".  I'm not sure if this means they had sex with her, or if they just stayed the night.  But, it is worded as sex has been worded in previous books, especially with the phrase "came in unto her".

Well Rahab took kindly to these two gentlemen, whether it's because they were good lovers or she really bought into the notion of their god, I can't say.  But she did mention that she has heard of their god Yahweh, and that the people in the region fear the Israelites.  So, maybe she was betting that Jericho would lose the coming invasion.

Rahab's house was located on a part of the wall surrounding Jericho.  She let them rappel down the wall by a scarlet thread.  This thread was to remain on her window to warn the invading Israelites not to hurt anyone inside that house, as per an arrangement she made with the two scouts.

So, we got the making for a pretty interesting war story.  Scouts meeting with sympathizers inside the walls of Jericho, and the ominous fear being felt by its inhabitants, knowing about the coming invasion.  Too bad the authors of Joshua sucked, or perhaps it was the translators.  In any case, there are the elements for a halfway decent story to be told here, and whoever wrote it or translated blew it.  I wonder, does this mean that Shakespeare was a better author than Yahweh?