Executed the priest's office] Probably this refers to the dignified manner in which Azariah opposed King Uzziah, who wished to invade the priest's office, and offer incense in the temple. See 2 Chron. xxvi. 17, 18.

Matthew Henry Commentary

--We have an account of Levi in this chapter. The priests and Levite were more concerned than any other Israelites, to preserve their descent clear, and to be able to prove it; because all the honours an privileges of their office depended upon their descent. Now, the Spiri of God calls ministers to their work, without any limit as to the families they came from; and then, as now, though believers an ministers may be very useful to the church, none but our great Hig Priest can make atonement for sin, nor can any be accepted but throug his atonement __________________________________________________________________

Original Hebrew