Doctrine matters.
Titus 1 KJV
(9) Holding fast the faithful word as he hath been taught, that he may be able by sound doctrine both to exhort and to convince the gainsayers.
(10) For there are many unruly and vain talkers and deceivers, specially they of the circumcision:
(11) Whose mouths must be stopped, who subvert whole houses, teaching things which they ought not, for filthy lucre's sake.
1 Timothy 4 KJV
(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.
Titus 1 KJV
(9) Holding fast the faithful word as he hath been taught, that he may be able by sound doctrine both to exhort and to convince the gainsayers.
(10) For there are many unruly and vain talkers and deceivers, specially they of the circumcision:
(11) Whose mouths must be stopped, who subvert whole houses, teaching things which they ought not, for filthy lucre's sake.
1 Timothy 4 KJV
(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.