V.18-26 (vvs. 20-22) a brief interruption — an example of what faith in Christ could do. A Gentile in authority displays great faith in the Person of Christ, and we see the fruit of this faith.
V.27-31 Another example of believing (faith is believing). “Believe ye that I am able?” This is the key to growth in your life.
V.32-35 Notice that it was the “gospel of the kingdom” that Jesus was preaching, not the gospel that we preach today. The book of Matthew never tells us the gospel of the grace of God. That gospel came out after Jesus died and rose again.