Paul said doctrine saves.
13: Till I come, give attendance to reading, to exhortation, to
doctrine.
14: Neglect not the gift that is in thee, which was given thee by prophecy, with the laying on of the hands of the presbytery.
15: Meditate upon these things; give thyself wholly to them; that thy profiting may appear to all.
16: Take heed unto thyself, and unto
the doctrine; continue in them: for in doing this thou shalt both
save thyself, and them that hear thee.
1 Tim. 4:13-16
If one takes no heed to the doctrine he will not be saved.