To explain knowledge of God

[FatAndFaithless]

But he also said that

for someone who does not know any better, what other choice do they have but believe whatever the supernature tells them?

So, Muslims and Hindus aren't at fault for being deceived, since they're simply listening to the supernatural (Satan) that is causing their spiritual experience. Does that mean that Muslims and Hindus are getting salvation as well, since it's none of their own fault they haven't sought jesus as that choice was never presented to them? Or does God punish those who had no choice to begin with, as well?