1. A good voice.
2. Naturalness of manner.
4. A good knowledge of Scripture and of common things.
5. Ability. to adapt himself to any congregation.
6. Good illustrative powers.
7. Zeal, prudence, and common sense.
8. A large, loving heart.
9. Sincere belief in all he says.
10. Entire dependence on the Holy Spirit for success.
11. A close walk with God by prayer.
12. A consistent walk before men by a holy life.
Taken from Lectures to My Students - Open Air Preaching - Remarks Thereon