It happened after three days, that the officers went through the midst of the camp;
      1. They might depend upon the ark to lead them; that is, upon God himself, of whose presence the ark was an instituted sign and token. It seems, the pillar of cloud and fire was removed, else that would have led them, unless we suppose that it now hovered over the ark and so they had a double guide: honour was put upon the ark, and a defence upon that glory. It is called here the ark of the covenant of the Lord their God. What greater encouragement could they have than this, that the Lord was their God, a God in covenant with them? Here was the ark of the covenant; if God be ours, we need not fear any evil. He was nigh to them, present with them, went before them: what could come amiss to those that were thus guided, thus guarded? Formerly the ark was carried in the midst of the camp, but now it went before them to search out a resting-place for them (Numbers 10:33), and, as it were, to give them livery and seisin of the promised land, and put them in possession of it In the ark the tables of the law were, and over it the mercy-seat; for the divine law and grace reigning in the heart are the surest pledges of God's presence and favour, and those that would be led to the heavenly Canaan must take the law of God for their guide (if thou wilt enter into life keep the commandments) and have the great propitiation in their eye, looking for the mercy of our Lord Jesus Christ unto eternal life.