After a particularly long and boring sermon, the parishioners filed past the pastor in silence. Toward the end of the line was a regular attendee who always had a positive comment about the sermon.
The fellow said, "Pastor, today your sermon reminded me of the mercy of God."
The pastor was thrilled. He replied, "No one has ever said anything like that about my preaching before. Tell me why."
The fellow answered, "Because it endured forever."