Rahab

Rahab was a prostitute who lived in the Canaanite city of Jericho, most notable for hiding Israelite spies sent by Joshua to plan an attack on the city. While she was not a Hebrew, Rahab heard of the the incident at the Red Sea and God's work in delivering Israel from Egypt, so she had faith. Due to her act of faith she would be forever remembered as righteous and she was spared from being killed in the attack of Jericho. After this she became a part of Israel and married Salmon, whom she had Boaz with; this made her a genealogical ancestor of David and of Jesus.