Jamieson, Fausset and Brown on 1 Kings 14:12

12. the child shall die--The death and general lamentation felt through the country at the loss of the prince were also predicted. The reason for the profound regret shown at his death arose, according to Jewish writers, from his being decidedly opposed to the erection of the golden calves, and using his influence with his father to allow his subjects the free privilege of going to worship in Jerusalem.