Some will never believe no matter what

"You may remove every prop today and close the mouths of objectors so that they can say nothing, and tomorrow they will go over the same ground again. Thus it will be, over and over, because they do not love the light and will not come to the light, lest their darkness and error should be removed from them."
Testimonies for the Church vol.3,p.37 E.G.W.

If they do not hear Moses and the prophets,

neither will they be persuaded

though one rise from the dead.

Luke 16:31