Deuteronomy 3:18-20

18And I commanded you at that time, saying, The LORD your God hath given you this land to possess it: ye shall pass over armed before your brethren the children of Israel, all that are fit for the war.1 19But your wives, and your little ones, and your cattle, (for I know that ye have many cattle,) shall abide in your cities which I have given you; 20Until the LORD shall have given rest to your brethren, as well as to you, and until they also possess the land which the LORD your God hath given them beyond Jordan: and then shall ye return every man to his possession, which I have given you.