II. He reminds the two tribes and a half of the obligations they were under to go over Jordan with their brethren, though they left their possessions and families on this side. Interest would make the other tribes glad to go over Jordan, but in these it was an act of self-denial, and against the grain; therefore it was needful to produce the agreement which Moses had made with them, when he gave them their possession before their brethren (v. 13): Remember the word which Moses commanded you. Some of them perhaps were ready to think now that Moses was dead, who they thought was too hard upon them in this matter, they might find some excuse or other to release themselves from this engagement, or might prevail with Joshua to dispense with them; but he holds them to it, and lets them know that, though Moses was dead, his commands and their promises were still in full force. He reminds them, 1. Of the advantages they had received in being first settled: "The Lord your God hath given you rest. He has given your minds rest; you know what you have to trust to, and are not as the rest of the tribes waiting the issue of the war first and then of the lot. He has also given your families rest, your wives and children, whose settlement is your satisfaction. He has given you rest by giving you this land, this good land, of which you are in full and quiet possession." Note, When God by his providence has given us rest we ought to consider how we may honour him with the advantages of it, and what service we may do to our brethren who are unsettled, or not so well settled as we are. When God had given David rest (2 Sam. vii. 1), see how restless he was till he had found out a habitation for the ark, Ps. cxxxii. 4, 5. When God has given us rest, we must take heed of slothfulness and of settling upon our lees. 2. He reminds them of their agreement to help their brethren in the wars of Canaan till God had in like manner given them rest, v. 14, 15. This was, (1.) Reasonable in itself. So closely were all the tribes incorporated that they must needs look upon themselves as members one of another. (2.) It was enjoined them by Moses, the servant of the Lord; he commanded them to do this, and Joshua his successor would see his commands observed. (3.) It was the only expedient they had to save themselves from the guilt of a great sin in settling on that side Jordan, a sin which would one time or other find them out, Num. xxxii. 23. (4.) It was the condition of the grant Moses had made them of the land they were possessed of, so that they could not be sure of a good title to, or a comfortable enjoyment of, the land of their possession, as it is here called (v. 15), if they did not fulfil the condition. (5.) They themselves had covenanted and agreed thereunto (Num. xxxii. 25): Thy servants will do as my Lord commandeth. Thus we all lie under manifold obligations to strengthen the hands one of another, and not to seek our own welfare only, but one another's.