'Witness' in the Bible

Give orders to the priests who take up the ark of witness, to come up out of Jordan.

But to be a witness between us and you, and between the future generations, that we have the right of worshipping the Lord with our burned offerings and our offerings of beasts and our peace-offerings; so that your children will not be able to say to our children in time to come, You have no part in the Lord.

For we said to ourselves, If they say this to us or to future generations, then we will say, See this copy of the Lord's altar which our fathers made, not for burned offerings or offerings of beasts, but for a witness between us and you.

And the children of Reuben and the children of Gad gave to that altar the name of Ed. For, they said, It is a witness between us that the Lord is God.

And Joshua said to all the people, See now, this stone is to be a witness against us; for all the words of the Lord have been said to us in its hearing: so it will be a witness against you if you are false to the Lord your God.