Joshua 22:12

12 And all the children of Israel gathered together to Selo, so as to go up and fight against them.

Joshua 22:12 Meaning and Commentary

Joshua 22:12

And when the children of Israel heard [of it]
Of the building the altar in the above place, namely, the nine tribes and a half settled in the land of Canaan:

the whole congregation of the children of Israel gathered themselves
together at Shiloh;
where the tabernacle and altar of the Lord were, whose cause they undertook to avenge, being injured as they imagined by the altar the other tribes had built, and where they could consult the Lord by Urim and Thummim, if needful; hither they repaired from the several places around, where their tribes were settled; not the whole body of the people, but their heads and representatives:

to go up to war against them;
to consult about it, and to prepare for it, which they were obliged to do by the law of God, as in the case of a city, so of a tribe drawn aside to idolatry; and which they imagined was the case of these tribes, or at least what they had done had a tendency to apostasy from the true worship of God, which they were zealous to defend at the hazard of their lives, and though it should issue in an extirpation of one or more of their tribes; see ( Deuteronomy 13:12-16 ) .

Joshua 22:12 In-Context

10 And they came to Galaad of Jordan, which is in the land of Chanaan: and the children of Ruben, and the children of Gad, and the half tribe of Manasse built there an altar by Jordan, a great altar to look at.
11 And the children of Israel heard say, Behold, the sons of Ruben, and the sons of Gad, and the half tribe of Manasse have built an altar at the borders of the land of Chanaan at Galaad of Jordan, on the opposite side to the children of Israel.
12 And all the children of Israel gathered together to Selo, so as to go up and fight against them.
13 And the children of Israel sent to the sons of Ruben, and the sons of Gad, and to the sons of the half tribe of Manasse into the land of Galaad, both Phinees the son of Eleazar the son of Aaron the priest,
14 and ten of the chiefs with him; one chief of every household out of all the tribes of Israel; (the heads of families are the captains of thousands in Israel.)

The Brenton translation of the Septuagint is in the public domain.