10 Then Joshua commanded the officers of the people, 11 "Pass through the camp, and command the people, 'Prepare your provisions; for within three days you are to pass over this Jordan, to go in to take possession of the land which the Lord your God gives you to possess.'" 12 And to the Reubenites, the Gadites, and the half-tribe of Manas'seh Joshua said, 13 "Remember the word which Moses the servant of the Lord commanded you, saying, 'The Lord your God is providing you a place of rest, and will give you this land.' 14 Your wives, your little ones, and your cattle shall remain in the land which Moses gave you beyond the Jordan; but all the men of valor among you shall pass over armed before your brethren and shall help them, 15 until the Lord gives rest to your brethren as well as to you, and they also take possession of the land which the Lord your God is giving them; then you shall return to the land of your possession, and shall possess it, the land which Moses the servant of the Lord gave you beyond the Jordan toward the sunrise."

Matthew Henry's Commentary on Joshua 1:10-15

Commentary on Joshua 1:10-15

(Read Joshua 1:10-15)

Joshua says to the people, Ye shall pass over Jordan, and shall possess the land; because God had said so to him. We honour the truth of God, when we stagger not at the promise of God. The two tribes and a half were to go over Jordan with their brethren. When God, by his providence, has given us rest, we ought to consider what service we may do to our brethren.