I have been doing a study on the concept of "the gospel." It has several nuances to it, but I am discovering two interrelated "gospel" messages. There is first the gospel of Jesus, which is inextricably linked to the Kingdom of God; and second, the gospel of the Apostles which is related to the death and resurrection of Jesus (with no specific mention of the Kingdom).
They are related in that the second gospel confirms the first. It is the death and resurrection of Christ that proves that he is the King and the Kingdom age has been ushered in. And, since he is the King, we, his subjects, must be about the work of the Kingdom.
I am sure that this is not original, has anyone else seen work done on this "two fold" gospel?