The faith of a Canaanite whore teaches us to never judge a book by its cover. Even though Rahab was a pagan, she heard about the power of God and the victories He had won for the children of Israel and decided she wanted that too. For her simple act of faith, God spared her and her entire family from the destruction of Jericho and she is memorialized as a hero of faith in Hebrews 11.