He also took the bronze altar that stood before the LORD from the front of the temple (between the new altar and the house of the LORD) and he put it on the north side of the new altar.
Though Ahaz had himself sacrificed in high places, on hills, and under every green tree (Kg2 16:4), yet God's altar had hitherto continued in its place and in use, and the king's burnt-offering and his meat-offering (Kg2 16:15) had been offered upon it by the priests that attended it; but here we have it taken away by wicked Ahaz, and another altar, an idolatrous one...
Commenting on 2 Kings 16:10-16
And King Ahaz commanded Urijah the priest, saying,.... Who was not to be commanded by the king in matters of worship, but to attend to the laws and institutions of God: saying, upon the great altar; meaning the new one, which either was of a larger size than the altar of God, or was greater in the esteem of Ahaz: burn the morning burnt offering...
And he brought also the brasen altar, which [was] before the LORD, from the forefront of the house, from between the altar and the house of the LORD, and put it on the north side of the altar. (i) That is, at the right hand, as men went into the temple.