Commentators point out a powerful principle in this verse. The two-and-a-half tribes, having already received their land and "rest," were called to fight for their brethren. As Matthew Henry highlights, "When God, by his providence, has given us rest, we ought to consider what service we may do for our brothers." Our personal blessings and seasons of peace are not just for our own enjoyment but are opportunities to help others secure their own promised rest.