The Judge Who Took Judgment for Me

Last Sunday, I ended my sermon with 17th-century English poet John Donne's "Holy Sonnet XIII." It is such a complex poem, that I now realize that the meaning was probably largely lost on the congregation (my fault, not theirs). But it is powerful enough to revisit for further reflection.
Here's the poem, followed by some brief comments:
What if this present were the world's last night?Mark in my