Deuteronomy 3:18 - 3:22
18 “Then I commanded you at that time, saying, ‘Yahweh your God has given you this land to possess it; all you men of valor shall cross over armed before your brothers, the sons of Israel. 19 But your wives and your little ones and your livestock (I know that you have much livestock) shall remain in your cities which I have given you, 20 until Yahweh gives rest to your brothers as to you, and they also possess the land which Yahweh your God will give them beyond the Jordan. Then you may return, every man to his possession which I have given you.’ 21 And I commanded Joshua at that time, saying, ‘Your eyes have seen all that Yahweh your God has done to these two kings; so Yahweh shall do to all the kingdoms into which you are about to cross. 22 Do not fear them, for Yahweh your God is the one fighting for you.’