'Witnesses' in the Bible

And Boaz saith to the elders, and to all the people, 'Witnesses are ye to-day that I have bought all that is to Elimelech, and all that is to Chilion and Mahlon, from the hand of Naomi;

and also Ruth the Moabitess, wife of Mahlon, I have bought to myself for a wife, to raise up the name of the dead over his inheritance; and the name of the dead is not cut off from among his brethren, and from the gate of his place; witnesses ye are to-day.'

And all the people who are in the gate say -- also the elders -- 'Witnesses! Jehovah make the woman who is coming in unto thy house as Rachel and as Leah, both of whom built the house of Israel; and do thou virtuously in Ephrathah, and proclaim the Name in Beth-Lehem;