All originality and no plagiarism makes for dull preaching.
If you would be holy, you must live close to Jesus.
There is no fatigue so wearisome as that which comes from lack of work.
A tear is enough water to float a desire to God.
The work of God's Holy Spirit begins with bruising. In order to be saved, the fallow ground must be plowed up, the hard heart must be broken, the rock must be split apart.
Prayer is not a hard requirement - it is the natural duty of a creature to its creator, the simplest homage that human need can pay to divine liberality.