'Witness' in the Bible

He replied, "You are to accept from me these seven ewe lambs as a witness that I have dug this well."

Come, let's make a covenant just between you and me. And let it serve as a witness between you and me."

Then Laban said, "This stack will serve as a witness between you and me today." That's how the place came to be named Galeed.

If you mistreat my daughters or if you take other wives besides them, though no one is watching us, keep in mind that God stands as a witness between you and me."

This stack is a witness, and so is this pillar, reminding me not to cross beyond this stack of stones, and reminding you not to pass by this stack in my direction, intending to cause harm.