(19) If the land of your possession be unclean.--This suggests that they might have built the altar in it to sanctify it. But it would hardly be intelligible unless the altar was, as we supposed, on the eastern side.

Verse 19. - If the land of your possession be unclean. Rather, be defiled, either by the idolatrous nations around, or by being cut off from the worship of the true God at Shiloh. The only satisfactory explanation of this somewhat difficult passage which has yet been given is that of Masius, who explains it of a possible belief on the part of the two and a half tribes, that they were cut off by Jordan into another land, a land which had no title to the promises and privileges of Israel, no share in the worship of the one true God at Shiloh. If they entertained such an idea, then, however unfounded their conviction, it were better far to abandon the land, how suited to their circumstances soever it might be, and come across the Jordan, and dwell in the midst of their brethren, and under the protection of the tabernacle of the Lord. Beside. That is, separate from, suggesting the idea of an exclusion of those who committed such an act from the worship of the Lord.

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, Le 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.Notwithstanding, if the land of your possession be unclean,.... That is, if it was judged to be so by them, because not cleansed from the sins of the former inhabitants of it by sacrifice, or because there was no altar in it to offer up sacrifice for the expiation of sin:

then pass ye over unto the land of the possession of the Lord,

wherein the Lord's tabernacle dwelleth; if you repent of the choice you have made of a country to dwell in, quit it, and come over into the land of Canaan, which the Lord has taken possession of, and residence in, and where his tabernacle is fixed, the place of his presence and worship, and where an altar is erected to sacrifice upon:

and take possession among us; they were willing to quit possession of their own, and make room for them in each of their tribes, and even though they straitened themselves, and parted with much of their estates, rather than they should make a schism, or go into idolatrous practices; which was a brave, noble, spirit indeed, and showed their great concern for the honour and glory of God, and his worship, and their love to their brethren, and affectionate regard for their spiritual welfare, above their own private, personal, and temporal good:

but rebel not against the Lord: the Word of the Lord, as the Targum, either Christ the essential Word, the Angel of Jehovah's presence, or his word of command:

nor rebel against us; by breaking off from us, and setting up another religion or form of worship:

in building you an altar beside the altar of the Lord our God: which ought to be common to both, and no other to be set up against it, or used beside it.