'Witness' in the Bible

And he said, These seven ewe lambs shalt thou take of my hand, that it may be a witness unto me, that I have digged this well.

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

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

If thou shalt afflict my daughters, and if thou shalt take wives besides my daughters, no man is with us; see, God is witness betwixt me and thee.

This heap be witness, and the pillar be witness, that I will not pass over this heap to thee, and that thou shalt not pass over this heap and this pillar unto me, for harm.