A wet eyed preacher will never preach dry sermons
If He is not Lord of all, He is not Lord at all.
God has to work in a man before He can work through a man.
Some preachers master thier subjects; some subjects master the preacher; once in awhile one meets a preacher who is both master of, and also mastered by his subject. The apostle Paul, I am sure, was in that category.
Prayer in its highest form is agonizing soul sweat.
The question isn't were you challenged. The question is were you changed?