'Witnesses' in the Bible

And Boaz said to the elders and all of the people, "You [are] witnesses today that I have acquired all that [was] for Elimelech and that [was] for Kilion and Mahlon from the hand of Naomi.

And also Ruth the Moabite, the wife of Mahlon, I have acquired as a wife, to raise up the name of the dead over his inheritance, so that the name of the dead may not be cut off from his relatives and from the gate of his [birth] place. You [are] witnesses today."

And all of the people who [were] at the gate and the elders said, "[We are] witnesses. May Yahweh make the woman coming into your house as Rachel and as Leah, who {together} built the house of Israel. May you have strength in Ephrathah and bestow a name in Bethlehem.