1 Kings 12:30

Whereupon the king took counsel, and made two calves [of] gold, and said unto them, It is too much for you to go up to Jerusalem: behold thy gods, O Israel, which brought thee up out of the land of Egypt.

And he set the one in Bethel, and the other put he in Dan.

And he made an house of high places, and made priests of the lowest of the people, which were not of the sons of Levi.

And Jeroboam ordained a feast in the eighth month, on the fifteenth day of the month, like unto the feast that [is] in Judah, and he offered upon the altar. So did he in Bethel, sacrificing unto the calves that he had made: and he placed in Bethel the priests of the high places which he had made.