How do we know that preaching has the power to save?

The scripture asserts that the preaching of the Word is indeed the power of God unto salvation (Romans 1:16). This indicates that God's method of calling the dead to life is through the proclamation of Scripture. In Ezekiel 37, God instructs Ezekiel to preach to the dry bones, showing that even in spiritual deadness, God's Word holds the transformative power to bring life. This practice of preaching involves declaring what God has done and will do, resting not on human effort but solely on divine authority and grace.