11 And the children of Israel heard say, Behold, the children of Reuben and the children of Gad and the half-tribe of Manasseh have built an altar in the forefront of the land of Canaan, in the region about the Jordan, on the side that pertaineth to the children of Israel. 12 And when the children of Israel heard of it, the whole congregation of the children of Israel gathered themselves together at Shiloh, to go up against them to war. 13 And the children of Israel sent unto the children of Reuben, and to the children of Gad, and to the half-tribe of Manasseh, into the land of Gilead, Phinehas the son of Eleazar the priest, 14 and with him ten princes, one prince of a fathers' house for each of the tribes of Israel; and they were every one of them head of their fathers' houses among the thousands of Israel. 15 And they came unto the children of Reuben, and to the children of Gad, and to the half-tribe of Manasseh, unto the land of Gilead, and they spake with them, saying, 16 Thus saith the whole congregation of Jehovah, What trespass is this that ye have committed against the God of Israel, to turn away this day from following Jehovah, in that ye have builded you an altar, to rebel this day against Jehovah? 17 Is the iniquity of Peor too little for us, from which we have not cleansed ourselves unto this day, although there came a plague upon the congregation of Jehovah, 18 that ye must turn away this day from following Jehovah? and it will be, seeing ye rebel to-day against Jehovah, that to-morrow he will be wroth with the whole congregation of Israel. 19 Howbeit, if the land of your possession be unclean, then pass ye over unto the land of the possession of Jehovah, wherein Jehovah's tabernacle dwelleth, and take possession among us: but rebel not against Jehovah, nor rebel against us, in building you an altar besides the altar of Jehovah our God. 20 Did not Achan the son of Zerah commit a trespass in the devoted thing, and wrath fell upon all the congregation of Israel? and that man perished not alone in his iniquity.

21 Then the children of Reuben and the children of Gad and the half-tribe of Manasseh answered, and spake unto the heads of the thousands of Israel, 22 The Mighty One, God, Jehovah, the Mighty One, God, Jehovah, he knoweth; and Israel he shall know: if it be in rebellion, or if in trespass against Jehovah (save thou us not this day,) 23 that we have built us an altar to turn away from following Jehovah; or if to offer thereon burnt-offering or meal-offering, or if to offer sacrifices of peace-offerings thereon, let Jehovah himself require it; 24 and if we have not [rather] out of carefulness done this, [and] of purpose, saying, In time to come your children might speak unto our children, saying, What have ye to do with Jehovah, the God of Israel? 25 for Jehovah hath made the Jordan a border between us and you, ye children of Reuben and children of Gad; ye have no portion in Jehovah: so might your children make our children cease from fearing Jehovah. 26 Therefore we said, Let us now prepare to build us an altar, not for burnt-offering, nor for sacrifice: 27 but it shall be a witness between us and you, and between our generations after us, that we may do the service of Jehovah before him with our burnt-offerings, and with our sacrifices, and with our peace-offerings; that your children may not say to our children in time to come, Ye have no portion in Jehovah. 28 Therefore said we, It shall be, when they so say to us or to our generations in time to come, that we shall say, Behold the pattern of the altar of Jehovah, which our fathers made, not for burnt-offering, nor for sacrifice; but it is a witness between us and you. 29 Far be it from us that we should rebel against Jehovah, and turn away this day from following Jehovah, to build an altar for burnt-offering, for meal-offering, or for sacrifice, besides the altar of Jehovah our God that is before his tabernacle.

Matthew Henry's Commentary on Joshua 22:11-29

Commentary on Joshua 22:10-20

(Read Joshua 22:10-20)

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.

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.