How do we know that preaching is God's chosen method?

Scripture provides clear evidence that preaching is not just a human endeavor but divinely ordained. In 1 Corinthians 1:21, Paul articulates that God chose the foolishness of preaching to save those who believe, which shows that this method has a sovereign purpose. Additionally, throughout the Bible, we see God raising prophets and apostles to proclaim His Word, reinforcing the belief that preaching carries divine authority and backing. Hence, for Christians, trusting in the effectiveness of preaching rests on its biblical foundation and the testimony of the Spirit working through it in the hearts of the listeners.