21 Then the people of Reuben, the people of Gad, and the half-tribe of Manasseh said in answer to the heads of the families of Israel, 22 "The Mighty One, God, the Lord! The Mighty One, God, the Lord! He knows; and let Israel itself know! If it was in rebellion or in breach of faith against the Lord, do not spare us today 23 for building an altar to turn away from following the Lord. Or if we did so to offer burnt offerings or grain offerings or peace offerings on it, may the Lord himself take vengeance. 24 No, but we did it from fear that in time to come your children might say to our children, 'What have you to do with the Lord, the God of Israel? 25 For the Lord has made the Jordan a boundary between us and you, you people of Reuben and people of Gad. You have no portion in the Lord.' So your children might make our children cease to worship the Lord. 26 Therefore we said, 'Let us now build an altar, not for burnt offering, nor for sacrifice, 27 but to be a witness between us and you, and between our generations after us, that we do perform the service of the Lord in his presence with our burnt offerings and sacrifices and peace offerings, so your children will not say to our children in time to come, "You have no portion in the Lord."' 28 And we thought, If this should be said to us or to our descendants in time to come, we should say, 'Behold, the copy of the altar of the Lord, which our fathers made, not for burnt offerings, nor for sacrifice, but to be a witness between us and you.' 29 Far be it from us that we should rebel against the Lord and turn away this day from following the Lord by building an altar for burnt offering, grain offering, or sacrifice, other than the altar of the Lord our God that stands before his tabernacle!"

Matthew Henry's Commentary on Joshua 22:21-29

Commentary on Joshua 22:21-29

(Read Joshua 22:21-29)

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.