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.
Les teaches that this is part of the mystery Paul deals with in Ephesians 3. In other past generations it was not made known to the sons of men as it is now revealed. The specific segment is that Gentiles should be fellow heirs, of the same body, and partakers of His promise in Christ—not by Judaism, not by the Mosaic law, but by Christ, by His finished work. Les points out that you never read such a thing in the Old Testament, that Gentiles would become one with Christ or with God, or one with the God of Abraham. Once it is revealed, it belongs to us, so we better believe it.
That the Gentiles should be fellowheirs, and of the same body, and partakers of his promise in Christ by the gospel: