1 Kings 12:30 in the King James Version
And this thing became a sin: for the people went to worship before the one, even unto Dan.
Context
29 He set the one in Bethel, and the other he put in Dan.
30 This thing became a sin, for the people went even as far as Dan to worship before the one there.
31 He made houses of high places, and made priests from among all the people, who were not of the sons of Levi.