1 Kings 12:27-33

27If this people keep going up to offer sacrifices in the House of Adonai at Jerusalem, then the heart of these people will turn back to their lord—to King Rehoboam of Judah. Then they will kill me and return to King Rehoboam of Judah.”

28So the king sought counsel and made two golden calves. He said to them, “You have been going up to Jerusalem long enough! Here are your gods O Israel, who brought you up out of the land of Egypt.”

29Then he set up one in Bethel and the other he put in Dan.

30Now this thing became a sin for the people went to worship before the one even up in Dan.

31He also made shrines on the high places and appointed priests from among the people, who were not sons of Levi.

32Then Jeroboam instituted a festival in the eighth month, on the fifteenth day of the month, imitating the Festival that is in Judah. He went up to the altar that he built in Bethel, to sacrifice to the calves that he had made. He installed in Bethel the priests of the high places that he made.

33Then he went up to the altar which he had made in Bethel on the fifteenth day in the eighth month—in the month that he had made up from his own heart—and made up a festival for the children of Israel, and went up to the altar to burn incense.