29. Paul presents three different points: "Diversities of gifts, but the same Spirit;" "diversities of administrations, and the same Lord;" "diversities of workings, but the same God." Unquestionably, Paul touches the article of faith concerning the Trinity, or three persons in the Divine Essence, and shows that both Christ and the Holy Spirit are true God and yet different in person from the Father and from each other. He teaches the same elsewhere (1 Cor 8, 5-6), saying: "For though there be that are called gods, whether in heaven or on earth; as there are gods many, and lords many; yet to us there is one God, the Father, of whom are all things, and we unto him; and one Lord, Jesus Christ, through whom are all things, and we through him."
30. In the text before us, the apostle likewise distinguishes the three—one God, one Lord, one Spirit. He assigns to each the particular operation whereby he manifests himself. One is God the Father, and from him as the origin and first person emanates all power. Another is the Lord, Christ the Son of God, who as the head of the Church appoints all offices. The third is the Spirit, who produces and dispenses all gifts in the Church. Yet all three are of one divine, almighty and eternal essence. They are of the same name, and are truly one since God must be an indivisible essence.
To each individual is attributed only the characteristics of the Divine Majesty. As he who is the source of all operative power in the Church and in the entire creation is true God; so also must the Lord who appoints all offices, and the Spirit who confers all gifts, be true God. No creature is able to impart spiritual offices and gifts; that is impossible to any but God. These three—God, Lord and Spirit—are not Gods of unlike nature, but one in divine essence. The Lord is no other God than God the Father; and the Spirit is none other than God and the Lord. But more on this topic elsewhere.