An altar. — Rather, the altar. It was not an altar (Joshua 22:23), but the altar, i.e., the pattern or copy of the altar of Jehovah, to prove that the two and a half tribes had the same right to approach Him as all the rest.
Related Commentaries of Joshua 22:26
Joshua 22:26
26 Therefore we said, Let us now prepare to build us an altar, not for burnt offering, nor for sacrifice: