'Witness' in the Bible

but to be a witness between us and you and between the generations after us, that we are to perform the service of the Lord before Him with our burnt offerings, and with our sacrifices and with our peace offerings, so that your sons (descendants) will not say to our sons in time to come, “You have no part in the Lord.”’

So we said, ‘If your descendants should say this to us or to our descendants in time to come, then we can reply, “See the copy of the altar of the Lord which our fathers made, not for burnt offering or for sacrifice, but rather it is a witness between us and you.”’

The sons of Reuben and the sons of Gad called the altar Witness; “For it is a witness between us that the Lord is God.”

Joshua then said to all the people, “Look, this stone shall serve as a witness against us, for it has heard all the words of the Lord which He spoke to us; so it shall be a witness against you, so that [afterward] you do not deny your God.”