Joshua 22:27-34

27 But that it may be a witness between us, and you, and our generations after us, that we might do the service of the LORD before him with our burnt offerings, and with our sacrifices, and with our peace offerings; that your children may not say to our children in time to come, Ye have no part in the LORD.
28 Therefore said we, that it shall be, when they should so say to us or to our generations in time to come, that we may say again, Behold the pattern of the altar of the LORD, which our fathers made, not for burnt offerings, nor for sacrifices; but it is a witness between us and you.
29 God forbid that we should rebel against the LORD, and turn this day from following the LORD, to build an altar for burnt offerings, for meat offerings, or for sacrifices, beside the altar of the LORD our God that is before his tabernacle.
30 And when Phinehas the priest, and the princes of the congregation and heads of the thousands of Israel which were with him, heard the words that the children of Reuben and the children of Gad and the children of Manasseh spake, it pleased them.
31 And Phinehas the son of Eleazar the priest said unto the children of Reuben, and to the children of Gad, and to the children of Manasseh, This day we perceive that the LORD is among us, because ye have not committed this trespass against the LORD: now ye have delivered the children of Israel out of the hand of the LORD.
32 And Phinehas the son of Eleazar the priest, and the princes, returned from the children of Reuben, and from the children of Gad, out of the land of Gilead, unto the land of Canaan, to the children of Israel, and brought them word again.
33 And the thing pleased the children of Israel; and the children of Israel blessed God, and did not intend to go up against them in battle, to destroy the land wherein the children of Reuben and Gad dwelt.
34 And the children of Reuben and the children of Gad called the altar Ed: for it shall be a witness between us that the LORD is God.