Joshua 6:16-18

And it came to pass at the seventh time, when the priests blew the trumpets, Joshua said unto the people, Shout; for Jehovah hath given you the city. And the city shall be devoted, even it and all that is therein, to Jehovah: only Rahab the harlot shall live, she and all that are with her in the house, because she hid the messengers that we sent. But as for you, only keep yourselves from the devoted thing, lest when ye have devoted it, ye take of the devoted thing; so would ye make the camp of Israel accursed, and trouble it.