Unity with Christ. How'd I miss that?

Do you have the experience of reading a verse a million times and then, all of a sudden, looking at it differently? A verse like this one:

and he fell to the ground and heard a voice saying to him, “Saul, Saul, why are you persecuting Me?” (Acts 9:4)

I always read this verse as it pertains to Saul's salvation, as in:  Most. Calvinistic. Conversion. Ever. Saul's singular, true experience of being in rebellion against God until he was knocked to the ground that then serves as a metaphor for all of our conversions.

Or, I've looked at it in terms of Saul's zealous, bigoted persecution of the Hellenist Christians while he turned something of a blind eye toward the Hebrew Christians.

But in Pastor Ryan's sermon yesterday he pointed out the obvious, obvious except to someone with a skull as thick as mine. Saul was not charged with persecuting the Church, or Christians--no, he was charge with persecuting Christ: why are you persecuting Me? Saul's attack on the visible church was equivalent to a direct, frontal assault on our Lord. Why? Because of our unity with Christ. 

I know, it's simple, but I just got it.

Makes me wonder what else I don't see, missed because I'm looking for something to support some doctrine du jour that is "the most important theological issue in the world" at that moment.