'Faithful' in the Bible

To the saints and faithful brethren in Christ which are at Colosse: Grace be unto you, and peace, from God our Father and the Lord Jesus Christ.

As ye also learned of Epaphras our dear fellowservant, who is for you a faithful minister of Christ;

All my state shall Tychicus declare unto you, who is a beloved brother, and a faithful minister and fellowservant in the Lord:

With Onesimus, a faithful and beloved brother, who is one of you. They shall make known unto you all things which are done here.