The Church must embrace all peoples and be truly catholic, from the Greek word καθολικός, which means “universal.” St. Paul speaks of the universality of the Church as a “mystery hidden for ages in God” (Eph 3:9). In Eph 3:4-6, he speaks of his “insight into the mystery of Christ, which was not made known to the sons of men in other generations as it has now been revealed to his holy apostles and prophets by the Spirit; that is, how the Gentiles are fellow heirs, members of the same body, and partakers of the promise in Christ Jesus through the Gospel.”