Joshua 6:17-18

17The city and everything that is in it belongs to the Lord, so destroy it all. Only the prostitute Rahab and all the people who are with her in her house will live. This is because she hid the two men that we sent.

18Be careful! Do not take for yourselves the valuable things that belong to the Lord. If you do that, you will cause bad trouble to come to the whole Israelite army. The Lord will destroy us all.