The period of Israel’s blindness is the window that God allows for the evangelization of the nations of the world. This window for Gentile or world mission is highlighted in the Book of Acts with the conversion of the Roman centurion called Cornelius. This inauguration of world mission is recorded herein in Acts 10:
Acts 10:34-35 Then Peter opened his mouth, and said, Of a truth I perceive that God is no respecter of persons: 35 But in every nation he that feareth him, and worketh righteousness, is accepted with him.