"I have made you a light to the Gentiles"

Both Paul and Barnabas spoke out boldly and said, "It was necessary that the word of God be spoken to you first, but since you reject it and condemn yourselves as unworthy of eternal life, we now turn to the Gentiles. For so the Lord has commanded us, I have made you a light to the Gentiles, that you may be an instrument of salvation to the ends of the earth." The Gentiles were delighted when they heard this and glorified the word of the Lord. All who were destined for eternal life came to believe, and the word of the Lord continued to spread through the whole region.

-- Acts 13:44-52

St. Luke in his gospel often expresses wonder and praise at the marvels of Christ and in his Acts of the Apostles stresses them as actions of the Holy Spirit: the community of Jerusalem, the invalid healed by Peter and John, the crowd that gives glory to God for that, and the pagans of Pisidia who "were glad and glorified the word of God."

-- CCC 2640