Verse 1-9 — Joshua dismisses the tribes with good counsel. Those who have the commandment have it in vain, unless they do the commandment; and it will not be done aright unless we take diligent heed. In particular to love the Lord our God, as the best of beings, and the best of friends; and as far as that principle rules in the heart, there will be constant care and endeavour to walk in his ways, even those that are narrow and up-hill. In every instance to keep his commandments. At all times, and in all conditions, with purpose of heart to cleave unto the Lord, and to serve him and his kingdom among men, with all our heart, and with all our soul. This good counsel is given to all; may God give us grace to take it!
Verse 10-20 — Here is the care of the separated tribes to keep their hold of Canaan's religion. At first sight it seemed a design to set up an altar against the altar at Shiloh. God is jealous for his own institutions; we should be so too, and afraid of every thing that looks like, or leads to idolatry. Corruptions in religion are best dealt with at first. But their prudence in following up this zealous resolution is no less commendable. Many an unhappy strife would be prevented, or soon made up, by inquiries into the matter of the offence. The remembrance of great sins committed formerly, should engage us to stand on our guard against the beginnings of sin; for the way of sin is down-hill. We are all concerned to reprove our neighbour when he does amiss, lest we suffer sin upon him, Leviticus 19:17. The offer made that they should be welcome to come to the land where the Lord's tabernacle was, and settle there, was in the spirit of true Israelites.
Verse 21-29 — The tribes took the reproofs of their brethren in good part. With solemnity and meekness they proceeded to give all the satisfaction in their power. Reverence of God is expressed in the form of their appeal. This brief confession of faith would remove their brethren's suspicion that they intended to worship other gods. Let us always speak of God with seriousness, and mention his name with a solemn pause. Those who make appeals to Heaven with a careless "God knows," take his name in vain: it is very unlike this. They express great confidence of their own uprightness in the matter of their appeal. "God knows it," for he is perfectly acquainted with the thoughts and intents of the heart. In every thing we do in religion, it highly concerns us to approve ourselves to God, remembering that he knows the heart. And if our sincerity be known to God, we should study likewise to let others know it by its fruits, especially those who, though they mistake us, show zeal for the glory of God. They disdained the design of which they were suspected to be guilty, and fully explained their true intent in building this altar. Those who have found the comfort and benefit of God's ordinances, cannot but desire to preserve them to their seed, and to use all possible care that their children may be looked upon as having a part in him. Christ is the great Altar that sanctifies every gift; the best evidence of our interest in him is the work of his Spirit in our hearts.
Verse 30-34 — It is well that there was on both sides a disposition to peace, as there was a zeal for God; for quarrels about religion, for want of wisdom and love, often prove the most fierce and difficult to be made up. Proud and peevish spirits, when they have passed any unjust blame on their brethren, though full evidence be brought of its unfairness, can by no means be persuaded to withdraw it. But Israel was not so prejudiced. They looked upon their brethren's innocence as a token of God's presence. Our brethren's zeal for the power of godliness, and faith and love, notwithstanding the fears of their breaking the unity of the church, are things of which we should be very glad to be satisfied. The altar was called ED, a witness. It was a witness of their care to keep their religion pure and entire, and would witness against their descendants, if they should turn from following after the Lord. Happy will it be when all professed Christians learn to copy the example of Israel, to unite zeal and steady adherence to the cause of truth, with candour, meekness, and readiness to understand each other, to explain and to be satisfied with the explanations of their brethren. May the Lord increase the number of those who endeavour to keep the unity of the Spirit in the bond of peace! may increasing grace and consolation be with all who love Jesus Christ in sincerity!