"By His wounds!" and "My Lord and My God!" are fundamentally semantically different; if you can't see it, I don't see a point in teaching you basic grammar. One is an adverbial phrase used essentially as slang, the other is a direct description of the person being spoken to. And once again, you're using English as a paradigm for your exegesis; bad idea.
Also, why did you cherry pick this one verse out of the many I provided? If you'd like to have a more thorough discussion give us your commentary on all of them.
Well, there's an old aphorism: Don't teach your gramma to suck eggs.
That means your gramma probably is already pretty good at it. I'm sixty (almost), college educated, and make a living writing and editing other people's writing.
As to the grammar involved here: S'wounds, My God, and My Lord are all interjections.
Interjection:
4.
Grammar. a.any member of a class of words expressing emotion, distinguished in most languages by their use in grammatical isolation, as
Hey! Oh! Ouch! Ugh! b.any other word or expression so used, as
Good grief! Indeed!
Why did I choose this particular verse?
I reached in the hat and plucked this one out. Do you want to go on to the next one out of the hat, I'll let you pick this time.
Regards,
Scott