Origen

“ Now the Gospel is a discourse containing a promise of things which naturally, and on account of the benefits they bring, rejoice the hearer as soon as the promise is heard and believed. Nor is such a discourse any the less a Gospel that we define it with reference to the position of the hearer. A Gospel is either a word which implies the actual presence to the believer of something that is good, or a word promising the arrival of a good which is expected. ”