The Bible gives multiple biblical warnings against false teachings – their apostles, their prophets, and their teachers. Bible warnings are explicit as to what they teach, and who is teaching them. They are not merely “mistaken”. The warnings call them “apostate” and says they “are not of us”. They are not saved. Strong warnings, are they not. And we are to continue teaching the Bible in it’s entirety.
Specific salvation parameters to get saved
Salvation does not require being smart, nor knowing it all, nor getting it all right. The thief on the cross was saved on the spot – while hanging there dying. But if we examine what the thief acknowledged… he got it right, and Jesus saved him on the spot. But others went away from Him without salvation. So what’s with that? What does Jesus require?