1 Kings 12:28–33

²⁸And the king took counsel, and made two calves of gold. And he said to them, It is too much for you to go up to Jerusalem: behold thy gods, Israel, which brought thee up out of the land of Egypt! ²⁹And he set the one in Bethel, and the other he put in Dan. ³⁰And this thing became a sin; and the people went to worship before the one, as far as Dan. ³¹And he made a house of high places, and made priests from all classes of the people, who were not of the sons of Levi. ³²And Jeroboam ordained a feast in the eighth month, on the fifteenth day of the month, like the feast that was in Judah, and he offered upon 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 that he had made. ³³And he offered upon the altar that he had made in Bethel, on the fifteenth day of the eighth month, in the month which he had devised of his own heart; and he made a feast for the children of Israel, and he offered upon the altar, burning incense.