The king approached to the altar, and offered thereon. — So the Targum renders. But all the other versions: “The king approached to the altar, and went up thereon.” (Comp. 1 Kings 12:32-33.) It thus appears that Ahaz, like Uzziah, personally exercised the priestly function of sacrifice.
Related Commentaries of 2 Kings 16:12
2 Kings 16:12
12 And when the king was come from Damascus, the king saw the altar: and the king approached to the altar, and offered thereon.