Albert Barnes on John 8:30

Many believed on him. Such was the convincing nature and force of the truths which he presented, that they believed he was the Messiah and received his doctrine. While there were many that became more obstinate and hardened under his preaching, there were many, also, who by the same truth were made penitent and believing. "The same sun that hardens the clay, softens the wax" (Clarke).

(z) "many believed on him" Jn 10:42