מלכים א טז:לא פירוש: רש״י

And worshiped the [idol] Baal. In addition to Yerovom’s calves.⁵The Gemara in Maseches Sanhedrin 102b states that Achov’s minor sins were like Yerovom’s major ones. If so, why are Yerovom’s sins emphasized here? Because he opened the way to sin for the Bnei Yisroel.