What does the Bible say about true preaching?

In 1 Corinthians 2:1-5, Paul highlights the essence of true preaching, which is the proclamation of Jesus Christ and His crucifixion. He stresses that true preaching does not seek to impress through eloquence or man's wisdom, but rather demonstrates the Spirit's power. The goal of this preaching is to ensure that the faith of the hearers rests firmly in God's power, not in the efficacy of the speaker’s words. True preaching thus becomes a medium through which God reveals Himself to His people and brings about faith in their hearts.