'Faithful' in the Bible

to the saints and faithful brothers in Christ in Colossae. Grace to you and peace from God our Father.

just as you learned [it] from Epaphras, our dear fellow slave who is a faithful minister of Christ [on] our behalf,

Tychicus, my dear brother and faithful servant and fellow slave in the Lord, will make known to you all {my circumstances},

together with Onesimus, my faithful and dear brother, who is [one] of you. They will make known to you all {the circumstances} here.