'Faithful' in the Bible

When he arrived and saw the grace of God [that was bestowed on them], he rejoiced and began to encourage them all with an unwavering heart to stay true and devoted to the Lord.

And when she was baptized, along with her household, she pleaded with us, saying, “If you have judged me and decided that I am faithful to the Lord [a true believer], come to my house and stay.” And she persuaded us.

On the following night the Lord stood near Paul and said, “Be brave; for as you have solemnly and faithfully witnessed about Me at Jerusalem, so you must also testify at Rome.”

And this is just what I did in Jerusalem; I not only locked up many of the saints (God’s people) in prison after receiving authority from the chief priests, but also when they were being condemned to death, I cast my vote against them.