During the storm at sea, who told Paul that God had granted him the lives of all on board?

Answer: An angel of God

An angel stood beside Paul and said, "Do not be afraid, Paul... God has granted you the lives of all who sail with you."

“For just last night an angel of the God to whom I belong and whom I serve stood beside me and said, ‘Do not be afraid, Paul; you must stand before Caesar. And look, God has granted you the lives of all who sail with you.’”— Acts 27:23-24 (BSB)