The Gospel: to the Jew first and then to the Greek.
Another historical blunder on the part of the church was to forget the Jewish package in which God’s blessings to the gentile world were wrapped, as it were, under the gentile world’s Christmas tree.
One can worship the wrappings, to push the error to the opposite extreme. I’ve seen it and the result is about the worst spiritual smart aleckiness I have ever seen.
Have you read Tom Torrance’s book, “The Mediation of Christ?” This is one of his fundamental arguments (if one can sort through the dense writing).