Deep Theological Lyrics

I recently posted a piece titled "Flesh and Blood" (https://www.classicchristianrockzine.com/2020/06/flesh-and-blood.html) that talked about specificity, often morbidly so, of some secular metal bands that use highly technical, medical terms in their titles and lyrics.  I argued that such specificity has a place in Christian metal since Jesus Himself was so bold and clear in His message, and then used "Eat The Flesh" from Bloodgood's 1987 album Detonation as an example.

Which songs do you know that have similarly deep and/or bold and/or specific lyrics?

Theocracy is pretty good at this.

Yes, Theocracy!

For technical, medical analogies, Tourniquet.