Eph 3:5

3:5 as it has now been revealed. The Old Testament’s silence about Paul’s mystery—the union of Jews and Gentiles in the church (v. 6)—was relative, not absolute. It was anticipated by the prophets (“Blessed be Egypt my people, and Assyria the work of my hands, and Israel my inheritance,” Is. 19:25). If the idea had been altogether absent from the Old Testament, Paul could not have said, as he did in Rom. 4, that the Abrahamic covenant included all who were of a like faith with Abraham, including Gentiles. Paul told Agrippa that his proclamation of light to both Jews and Gentiles did not go beyond what had been promised by Moses and the prophets (Acts 26:22, 23).