Joshua 22:9-19

9 So the Reubenites and the Gadites and the half-tribe of Manasseh returned home, parting from the Israelites at Shiloh, which is in the land of Canaan, to go to the land of Gilead, their own land of which they had taken possession by command of the Lord through Moses.
10 When they came to the region near the Jordan that lies in the land of Canaan, the Reubenites and the Gadites and the half-tribe of Manasseh built there an altar by the Jordan, an altar of great size.
11 The Israelites heard that the Reubenites and the Gadites and the half-tribe of Manasseh had built an altar at the frontier of the land of Canaan, in the region near the Jordan, on the side that belongs to the Israelites.
12 And when the people of Israel heard of it, the whole assembly of the Israelites gathered at Shiloh, to make war against them.
13 Then the Israelites sent the priest Phinehas son of Eleazar to the Reubenites and the Gadites and the half-tribe of Manasseh, in the land of Gilead,
14 and with him ten chiefs, one from each of the tribal families of Israel, every one of them the head of a family among the clans of Israel.
15 They came to the Reubenites, the Gadites, and the half-tribe of Manasseh, in the land of Gilead, and they said to them,
16 "Thus says the whole congregation of the Lord, "What is this treachery that you have committed against the God of Israel in turning away today from following the Lord, by building yourselves an altar today in rebellion against the Lord?
17 Have we not had enough of the sin at Peor from which even yet we have not cleansed ourselves, and for which a plague came upon the congregation of the Lord,
18 that you must turn away today from following the Lord! If you rebel against the Lord today, he will be angry with the whole congregation of Israel tomorrow.
19 But now, if your land is unclean, cross over into the Lord's land where the Lord's tabernacle now stands, and take for yourselves a possession among us; only do not rebel against the Lord, or rebel against us by building yourselves an altar other than the altar of the Lord our God.

Footnotes 3

New Revised Standard Version Bible, copyright 1989, Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.