one of the priests

Judges 17:13
Then Micah said, "Now I know that the LORD will be good to me, because a Levite has become my priest."

1 Kings 12:31
Jeroboam also built shrines on the high places and appointed from every class of people priests who were not Levites.

1 Kings 13:2
And he cried out against the altar by the word of the LORD, "O altar, O altar, this is what the LORD says: 'A son named Josiah will be born to the house of David, and upon you he will sacrifice the priests of the high places who burn incense on you, and human bones will be burned on you.'"

2 Chronicles 11:15
And Jeroboam appointed his own priests for the high places and for the goat-demons and calf idols he had made.