'We are Witnesses' in the Bible

Joshua said to the people, "You are witnesses against yourselves that you have chosen Yahweh yourselves, to serve him." They said, "We are witnesses."

All the people who were in the gate, and the elders, said, "We are witnesses. May Yahweh make the woman who has come into your house like Rachel and like Leah, which two built the house of Israel; and treat you worthily in Ephrathah, and be famous in Bethlehem.

and killed the Prince of life, whom God raised from the dead, to which we are witnesses.

We are witnesses of everything he did both in the country of the Jews, and in Jerusalem; whom they also killed, hanging him on a tree.