Joshua 6:25-26

25But Rahab the harlot, her father’s household and all who belonged to her, Joshua spared. She has lived in the midst of Israel to this day, because she hid the scouts whom Joshua sent to spy out Jericho.

26At that time Joshua made an oath saying: “Cursed before Adonai is the man who rises up and rebuilds this city, Jericho! On his firstborn he will lay its foundation, and on his youngest son he will set up its gates.”