Preaching involves the objective (what Christ has done) and the subjective (what you must do). The objective work of Christ (in his active and passive obedience) will do us no good without a subjective appropriation of it on our part, i.e., we must exercise faith (knowledge, assent, and trust) in response to the gospel (and its accompanying grace: evangelical repentance).
However, seeking to schematize and minutely examine our subjective appropriation of Christ (the sort of thing that certain "experimental" preachers do, ending up pointing you to yourself and your experience of Christ rather than to Christ himself), primarily focusing people on whether this has "really happened to them," i.e., they've had some particular sort of religious experience that yields assurance, is not fruitful. I grew up under such preaching, which was counter-productive in every way I can enumerate. When I learned many years ago that it was Christ, not my experience of him, that saved me, such involved a significant advance in my understanding of spiritual things; I realized how utterly rooted all my experience was in his person and work.
You may say something about "under every rock," but God's Word holds forth Christ as the only remedy for sin and as the only one in whom we are to place all our hope and trust. Preaching Christ is the call and privilege of the minister and is the very thing, and the only thing, calculated to move God's people to follow after him in all their ways. "We do not preach ourselves but Christ Jesus the Lord," said Paul (
II Cor. 4:5).
I had to leave this and post without seeing your edit,
@MChase, about "Are the indicative true about you?" I heartily agree that there's a proper place to challenge auditors ("Do you have faith, its accompanying graces, and its fruit in your life?"), but never in a way that ends up preaching them and not Christ! This is something that I challenge experimental preaching appropriately to take on board (even as they do redemptive-historical preaching to challenge hearers). Our challenge of hearers is never to break the bruised reed and never to leave people looking at themselves rather than looking to Jesus, the author and finisher of our faith (Heb. 12:1-2).
Peace,
Alan