Titus 1:6; Titus 1:13; 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 1:13

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

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.