At the risk of approaching preaching relying on Aristotle’s theory of universals
What are the core, tangible elements that every Christian sermon must have for it to be a Christian sermon?
Here’s what we can agree on:
1. A preacher
2. An audience
Everything else is debatable. (apparently)
Strong contenders include: the name (or other title) of Jesus, explicit use of the bible, a call for repentance and an opening gag.
I’m looking at the content of the apostle’s proclamations at the moment (their kerygma *from the greek!). I’ll get back to you with what they had in common.