Bede : For the Lord has commanded us: I have set you as a light to the Gentiles. What was specifically said to the Lord Christ, the apostles now consider said to themselves, remembering that they are his members, just as he himself, because of the unity of the same body, said: "Saul, Saul, why do you persecute me?" (Acts 9:4). — Commentary on Acts John Chrysostom : "For so hath the Lord commanded us, saying, I have sent thee to be a light of the Gentiles, that thou shouldest be for salvation unto the ends of the earth." For that the Gentiles might not be hurt at hearing this, as if the case were so that, had the Jews been in earnest, they themselves would not have obtained the blessings, therefore he brings in the prophecy, saying, "A light of the Gentiles," and, "for salvation unto the ends of the earth." — Homily on Acts 30 John Chrysostom : "Then why have ye not done this?" It was indeed needful that the Gentiles should hear, and this not before you: it is your own doing, the "before you." "For so hath the Lord commanded us: I have set thee for a light of the Gentiles, that thou shouldest be for salvation," i.e. for knowledge which is unto salvation, and not merely of the Gentiles, but of all men, "unto the ends of the earth." — Homily on Acts 30 Tertullian : Now who was it that said; "Let there be light? " And who was it that said to Christ concerning giving light to the world: "I have set Thee as a light to the Gentiles" -to them, that is, "who sit in darkness and in the shadow of death? " (None else, surely, than He), to whom the Spirit in the Psalm answers, in His foresight of the future, saying, "The light of Thy countenance, O Lord, hath been displayed upon us. — Against Marcion Book V