1 Kings 12:32
And Jeroboam ordained a feast in the eighth month, on the fifteenth day of the month, like to the feast that is in Judah, and he offered on the altar. So did he in Bethel, sacrificing to the calves that he had made: and he placed in Bethel the priests of the high places which he had made.
Torrey's Topical Textbook—AKJV

1 Kings 13:33
After this thing Jeroboam returned not from his evil way, but made again of the lowest of the people priests of the high places: whoever would, he consecrated him, and he became one of the priests of the high places.
Torrey's Topical Textbook—AKJV