Jos 22:11-12
The Israelites (on this side) heard that the tribes in question had built the altar “opposite to the land of Canaan” (lit. in the face or in front of the land of Canaan), אל־אבר, “at the opposite region of the children of Israel” (two descriptions which may be explained on the supposition that the name of Canaan is used in a restricted sense, the valley of the Jordan being expressly excepted, and Canaan considered as only extending to the valley of the Jordan). When they heard this, the whole congregation (in its heads and representatives) assembled at Shiloh, to go up, i.e., with the intention of going, to make war against them. The congregation supposed that the altar had been built as a place for sacrifice, and therefore regarded it as a wicked violation of the commandment of God with regard to the unity of the sacrificial altar (Lev 17:8-9; Deu 12:4.), which they ought to punish according to the law in Deu 13:13. This zeal was perfectly justifiable, and even praiseworthy, as the altar, even if not erected as a place for sacrifice, might easily be abused to that purpose, and thus become an occasion of sin to the whole nation. In any case, the two tribes and a half ought not to have erected such a building without the consent of Joshua or of the high priest.