Joshua 1:12 (KJV)

Then Joshua commanded the officers of the people, saying,

Pass through the host, and command the people, saying, Prepare you victuals; for within three days ye shall pass over this Jordan, to go in to possess the land, which the Lord your God giveth you to possess it.

And to the Reubenites, and to the Gadites, and to half the tribe of Manasseh, spake Joshua, saying,

Remember the word which Moses the servant of the Lord commanded you, saying, The Lord your God hath given you rest, and hath given you this land.

Your wives, your little ones, and your cattle, shall remain in the land which Moses gave you on this side Jordan; but ye shall pass before your brethren armed, all the mighty men of valour, and help them;