'Witness' in the Bible

He said to them, “The Lord is a witness against you, and His anointed is a witness today that you haven’t found anything in my hand.”“He is a witness,” they said.

Then Samuel said to the people, “The Lord, who appointed Moses and Aaron and who brought your ancestors up from the land of Egypt, is a witness.

As for the matter you and I have spoken about, the Lord will be a witness between you and me forever.”

Jonathan then said to David, “Go in the assurance the two of us pledged in the name of the Lord when we said: The Lord will be a witness between you and me and between my offspring and your offspring forever.” Then David left, and Jonathan went into the city.