Joshua 6:25-26

25And Joshua saved alive Rahab the harlot, and her father's household, and all that she had, and she dwelt in the midst of Israel to this day; because she hid the messengers whom Joshua had sent to spy out Jericho.

26And Joshua swore at that time, saying, Cursed be the man before Jehovah who shall rise up and build this city Jericho! In his first-born shall he lay its foundation, and in his youngest son shall he set up its gates.