'Witness' in the Bible

And he said, That thou take the seven ewe-lambs of my hand, that they may be a witness to me that I have dug this well.

And now, come, let us make a covenant, I and thou; and let it be a witness between me and thee.

And Laban said, This heap is a witness between me and thee this day. Therefore was the name of it called Galeed,

if thou shouldest afflict my daughters, or if thou shouldest take wives besides my daughters, no man is with us; see, God is witness between me and thee!

let this heap be witness, and the pillar a witness, that neither I pass this heap to go to thee, nor thou pass this heap and this pillar to come to me, for harm.