Application

Personal application has been called the "soul" of preaching. A sermon without application is like a letter posted without an address. It may be well-written, rightly dated, and duly signed. But it is useless, because it never reaches its destination. Our Lord's inquiry is an admirable example of real heart-searching application, "Have you understood?"

JC Ryle

Expository Thoughts on the Gospels, Volume 1

Baker

p154