'Forefather' in the Bible

"Brothers, I can speak confidently to you about our forefather David, that he both died and was buried, and his tomb is with us to this day.

who said by the Holy Spirit through your servant David our forefather, 'Why do the nations rage, and the peoples plot foolish things?

So he replied, "Brothers and fathers, listen to me. The God of glory appeared to our forefather Abraham when he was in Mesopotamia, before he settled in Haran,