Tell us more about the "Christ in All the Scriptures" sermon. Was that essentially a study of the different OT prophesies that alluded to Christ? Did he discuss messianic Psalms any?
He pulled out various passages in the four major parts of the O.T.: History (Genesis, mostly), The Law, The Psalms, and the Prophets. His main point of it all was that Christ wasn't just alluded to in the O.T., but that He was central to the O.T. He took up prophesy and types.
And, P.S., he isn't Presbyterian. He's from a similar church that meets in Scotland (non-denominational, evangelical).