I. The solemn, serious urgency of preaching God's Word, v1. II. Pastors and people are each to be taught, reproved, rebuked, exhorted and encouraged, v2. III. Why is this so important?, vv3-4. IV. What should a pastor do? 1) Always be sober-minded. 2) Endure suffering. 3) Do the work of an evangelist. 4) Fulfill your ministry.