Genesis 21:30

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.

Genesis 31:52

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.

Genesis 31:44-48

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

but it shall be a witness between us and you, and between our generations after us, that we may do the service of Jehovah before him with our burnt-offerings, and with our sacrifices, and with our peace-offerings; that your children may not say to our children in time to come, Ye have no portion in Jehovah.

Joshua 24:27

And Joshua said unto all the people, Behold, this stone shall be a witness against us; for it hath heard all the words of Jehovah which he spake unto us: it shall be therefore a witness against you, lest ye deny your God.