My question to you is this: Is Christ himself enough validation for you? source
Why Paul called it my gospel?
When I talk to others about Christ I am speaking MY gospel to them. It is the same as Paul's, but it is also mine. The point is that the people in MY world see it as MY message. Most Bible "scholars" will dispute that it agrees with the apostle Paul's message, but it really makes no difference in the long run. Those who are not too familiar with the Bible are usually very surprised that such a message would be found in it based on what they have experienced from religion. All they can really comprehend is that this is Jim's viewpoint (even if I show it to them in the Bible). The fact is that my message of good news really comes from CHRIST, so that when anyone receives it as FROM GOD they are receiving it in truth and NOT because I am right.
The gospel of Christ is the only message that is truly valid in this world because it is not about the one who speaks it, but it is about God Himself. Every other attempt to preach "God's message" to the world that is centered around programs or laws or principles, etc, is not about Christ at all. It is about preaching YOURSELF. Dissect any "message" in the world and you will also discover that it is centered around the person who speaks it. Try it sometime, it's amazing what you will hear!!! :)
Jesus told the Pharisees, "I have come in My Father's name, and you do not receive me; if another shall come in his own name, you will receive him." (John 5:43). Preaching Christ doesn't glorify the speaker in any way. It gives me no personal "kingdom" to establish myself by. I'm always left in the same place: IF IT IS HEARD AT ALL IT IS BECAUSE HIS SPIRIT IS MAKING IT REAL TO THE HEARER. I never really know how it's going to be taken ... and that factor leaves me no place to trust my own abilities. That's why you will always notice the tendency for a speaker to add an element in that will "validate" or cause attention to be put upon himself. The truth of the matter is that the gospel goes out and I CAN'T "CLOSE THE SALE" (part of my earlier "evangelical" training) - it is totally the work of God.
Consider this: each of you are taking the message of Christ to your individual "worlds" ... and TO THEM it is YOUR gospel. Remember who it is that you are telling them about. It is a strange message, and unlike any they have heard. Because it's not about YOU but about HIM.
Oh, well, I sure didn't plan on going on like this. hahaha! :)