I love how Frank Viola gets to the point on this question and reframes things. This is beautifully done.
In His preaching and teaching, Jesus consistently pointed to Himself. Read the four gospels carefully sometime and count the number of times that Jesus speaks about Himself. You will have no doubts that His message—His gospel—was Himself. Paul, Peter, John, et al. preached the same gospel as did Jesus. Their message was also Christ.