The Gospel Bait and Switch

This applies to a lot more people than Preachers:

Preachers have a theoretical gospel and an operative gospel. Theological we get into a theological mode and produce, as far as possible, a biblically based notion focused on the person and work of Christ. But, in pastoral practice it is easy to be pragmatic. Our operative gospel will be the thing that preoccupies us as the focus of our preaching and teaching. It may be a practical hobbyhorse or a denominational distinctive. Baptism, a particular view of the second coming, social action, creationism, spiritual gifts, and the like are all easily raised to the status of gospel by becoming the main focus of our preaching. This is especially deplorable when these spurious gospels are made the basis  of our acceptance of other Christians.

—Graeme Goldsworthy, Preaching the Whole Bible as Christian Scripture, Pg. 81