Preaching the Word of God is not something we can trifle with. Preachers should tremble at the gravity of their jobs:
When God speaks, creation obeys. When he spoke the universe into existence, it happened (Gen 1:3-26). When he speaks into the cold, dead hearts of sinners, a new creation appears (2 Cor 5:17). When preachers exposit the Word of God and announce that Jesus is the Christ, the church is built (Matt 16:16-18). Whenever God’s Word is proclaimed, something comes into existence that wasn’t there before.
—Dan Dumas, A Guide to Expository Ministry