To consecrate himself, i. e. to make himself a priest. See Poole on "Leviticus 7:37". That are no gods; that have nothing of the nature or power, though you give them the name of gods.
Related Commentaries of 2 Chronicles 13:9
2 Chronicles 13:9
9 Have ye not cast out the priests of the LORD, the sons of Aaron, and the Levites, and have made you priests after the manner of the nations of other lands? so that whosoever cometh to consecratea himself with a young bullock and seven rams, the same may be a priest of them that are no gods.