This is a rather technical piece—some notes I made while working on something else—but the gist of the argument can be gained from the introduction and the conclusion. I have been looking at how the idea of a Gentile mission emerges in the New Testament. I made the point in “The parable of the wedding feast and the man without a wedding garment” and the ensuing discussion that Jesus does not contemplate a Gentile mission or the inclusion of Gentiles in the community of his followers before his death. He may have expected Gentiles to be included, or at least involved, at the parousia, but the mission that he inaugurated was basically a Jewish mission to Israel.
Behind Jesus, of course, is the Old Testament, and it is generally held by those who would attribute a Gentile mission to Jesus that the Psalms and the Prophets in particular foresee a day when large numbers of Gentiles will be incorporated into the covenant people. Christopher Wright, for example, has a good section in The Mission of God: Unlocking the Bible’s Grand Narrative in which he makes a progressive case to this effect, culminating in the contention that “there were voices and visions within the Old Testament that looked for the day when nations would be included within Israel in such a way that the very word Israel would be radically extended and redefined” (455).