Acts 2:38 is the only truth required for salvation? I certainly question that.
Why does Paul say that heretics will not enter the Kingdom? Seems people who had obeyed
Acts 2:38 could still be lost because of false doctrine.
19: Now the works of the flesh are manifest, which are these; Adultery, fornication, uncleanness, lasciviousness,
20: Idolatry, witchcraft, hatred, variance, emulations, wrath, strife, seditions,
heresies,
21: Envyings, murders, drunkenness, revellings, and such like: of the which I tell you before, as I have also told you in time past, that they which do such things shall not inherit the kingdom of God.
It looks like we better have more light than just that.