Titus 1:9-11

9Holding 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.

10For there are many unruly and vain talkers and deceivers, specially they of the circumcision: 11Whose mouths must be stopped, who subvert whole houses, teaching things which they ought not, for filthy lucre’s sake.