Romans 5 culminates in a dramatic - if not overwhelming - crescendo of grace.

So much so that it prompts St. Paul to anticipate the question, often brushed aside as a rhetorical foil, that opens chapter 6.

But it's akin to questions pressed on Jesus. It is the kind of question put to St. Augustine, Martin Luther, and Martin Luther King Jr.

Do we believe in grace so persistent and powerful that it actually makes sense to ask if we should just keep on sinning?