Redemption of a cockroach

So I'm sitting there and I'm teaching on redemption. I've gotten
through creation, the fall, and now I'm on to redemption.

"God wants to redeem all things on earth," I say, "not just human
souls (even though this is still probably the most important
thing)"...

Just then a little cockroach runs across the floor in the middle of
our little circle. As the teacher, I felt it my work to stand up and
swiftly stomp the little guy out.

"Oh...." says one of the girls, "Thats how we redeem a cockroach.... I
think I understand."