'Faithful Witness' in the Bible

“It shall be established forever like the moon,And the witness in the heavens is ever faithful.” Selah.

A faithful and trustworthy witness will not lie,But a false witness speaks lies.

And I will get faithful witnesses to attest [to this prophecy] for me, Uriah the priest and Zechariah the son of Jeberechiah.”

Then they said to Jeremiah, “May the Lord be a true and faithful witness against us if we fail to act in accordance with all the things that the Lord your God sends you to tell 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.”