This passage is of central importance. For us with a man centered perspective, the argument has primarily to do with us and our salvation; but we are wrong when we read Galatians that way. For Paul the whole issue is God centered versus man centered faith. In verse 16 Paul stresses this plainly. The promises of God he says, are not primarily to Israel, or by implication to the church, but to Jesus Christ. They are made to Abraham and his seed, which is not plural. It does not refer to either Jews or to Gentiles, but to Jesus Christ. The promises made are to Christ, and are ours only if we are in Christ. By virtue of God’s grace and the manifestation is present in our faith, as verse 22 makes clear.