Titus 1:9; Titus 1:13; Titus 2:15

Titus 1:9

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.

Titus 1:13

13 This witness is true. Wherefore rebuke them sharply, that they may be sound in the faith;

Titus 2:15

15 These things speak, and exhort, and rebuke with all authority. Let no man despise thee.