Joshua 6:17-19

17And 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. 18But 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. 19But all the silver, and gold, and vessels of brass and iron, are holy unto Jehovah: they shall come into the treasury of Jehovah.