16 Thus saith the whole assembly of Jehovah: What wickedness is this which ye have committed against the God of Israel, to turn away this day from following Jehovah, in that ye have built yourselves an altar, rebelling this day against Jehovah? 17 Is the iniquity of Peor too little for us? from which we are not cleansed until this day, although there was a plague in the assembly of Jehovah. 18 And ye turn away this day from following Jehovah; and it will be, that since ye rebel this day against Jehovah, to-morrow he will be wroth with the whole assembly of Israel. 19 Notwithstanding, if the land of your possession is unclean, come over into the land of the possession of Jehovah, where Jehovah's tabernacle dwelleth, and take possession amongst us; but rebel not against Jehovah, and rebel not against us, in building for yourselves an altar besides the altar of Jehovah our God. 20 Did not Achan the son of Zerah commit a trespass in the accursed thing? and wrath fell on all the assembly of Israel, and he perished not alone in his iniquity.
Matthew Henry's Commentary on Joshua 22:16-20
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.