Titus 1:6; Titus 1:9; Titus 3:8

Titus 1:6

6 If any be blameless, the husband of one wife, having faithful children not accused of riot or unruly.

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 3:8

8 This is a faithful saying, and these things I will that thou affirm constantly, that they which have believed in God might be careful to maintain good works. These things are good and profitable unto men.