My first dictum of preaching is "You preach the Text to your Congregation". I can't find where I wrote on that before - it's somewhere. But I have formulated a second dictum of preaching:
"Good preaching is typological, because what Jesus does for one is typical of what He does for all."
While from our perspective they are wild, unexpected, and miraculous, what Jesus does in the Gospels is not extraordinary for Him. These things that we see Jesus doing are things that are typical - the things that He does all the time. Does He heal the deaf mute? Of course He does - He is the Word by which all things were created, of course He will be about the business of recreating.
And as such, the example of what Jesus has done for this deaf man can be applied to you - for this is what Jesus does. He restores creation - and so He has come to restore you, to forgive your sins and raise you to life everlasting.
What we see happen to others in the Scriptures is the reality of what happens to us - for what Christ came to do for them, He still comes and does for us.
Let your preaching show this, and it will be solid preaching.