1 Kings 12:27-33

27If these people go up to the house of the Lord in Jerusalem to offer sacrifices, then their heart will turn to their lord, to Rehoboam king of Judah; and they will kill me and return to Rehoboam king of Judah.”

28So the king took counsel [and followed bad advice] and made two calves of gold. And he said to the people, “It is too much for you to go [all the way] up to Jerusalem; behold your gods, O Israel, who brought you up out of the land of Egypt.”

29He set the one [golden calf] in Bethel, and the other he put in Dan.

30Now this thing became a sin [for Israel]; because the people went to worship before the one [or the other of them] as far as Dan.

31And Jeroboam also made houses on high places, and he made priests from all people who were not of the sons (descendants) of Levi.

32Jeroboam held a feast on the fifteenth day of the eighth month, like the feast which is kept in Judah, and he went up to the altar; he did this in Bethel, sacrificing to the calves which he had made. And he stationed in Bethel the priests of the high places which he had made.

33So he went up to the altar which he had made in Bethel on the fifteenth day of the eighth month, in the month which he had devised in his own heart [in defiance of God’s commandments]; and he held a feast for the Israelites and he went up to the altar to burn incense [in defiance of God’s law.]