Preaching the message, rather than preaching 'from' the message

Halden has recently posted a couple of sermons up on his website.

Ephesians 2:1-10 here
and 1 John 1:1-2:2 here

They are incredibly gripping. The style is one I've never really heard before, where he is simply rephrasing the text of scripture, with a few expansions here and there. It is as though he is imagining himself into the voice of the apostle and then speaking that to his congregation.
What you end up with is rich depth within a short sermon. I wonder though, whether they would need to be spoken slowly.
Certainly something I would like to have a crack at sometime.