Do Gentiles become partakers of God's promise through the Mosaic law or through Christ?
Gentiles become partakers of God's promise through Christ, not through the Mosaic law. The mystery revealed to Paul shows Gentiles are fellow heirs, of the same body, and partakers of His promise in Christ, not by Judaism or the Mosaic law, but by Christ and His finished work.
Les teaches that the mystery in Ephesians 3 includes the truth that Gentiles should be fellow heirs, of the same body, and partakers of His promise in Christ. He emphasizes that this is not by Judaism, not by the Mosaic law, but by Christ, by His finished work. Les explains that this truth was not made known in other ages or past generations; it was never made known before as it is now revealed. He notes that once it is revealed, it belongs to us, so we better believe it. He also contrasts this with the Old Testament, where no one understood that Gentiles would become one with Christ or with the God of Abraham.
That the Gentiles should be fellowheirs, and of the same body, and partakers of his promise in Christ by the gospel:
How do Gentiles become partakers of the promise—by the law or by Christ?
Gentiles become partakers of the promise by Christ, not by the law. Paul reveals that Gentiles are fellow heirs, of the same body, and partakers of His promise in Christ—not by Judaism or the Mosaic law, but by Christ and His finished work.
How do Gentiles become fellow heirs and partakers of God's promise—by Judaism, the Mosaic law, or by Christ?
Gentiles become fellow heirs, of the same body, and partakers of God's promise in Christ, not by Judaism and not by the Mosaic law, but by Christ and His finished work. This was the mystery revealed to Paul, not made known in other generations, and once revealed it belongs to believers who must believe it.