Matthew described Jesus' ministry as consisting of teaching, preaching, and healing in 4:23. Chapters 5-7 record what He taught His disciples. We have the essence of His preaching ministry in 4:17. Now in 8:1-9:34 we see His healing ministry. He demonstrated authority over disease, demons, and nature. Matthew showed that Jesus' ability proves that He is the divine Messiah. The King authenticated His claims by performing messianic signs. In view of this the Jews should have acknowledged Him as the Messiah.
"The purpose of Matthew in these two chapters [8 and 9] is to offer the credentials of the Messiah as predicted in the Old Testament."361
Matthew did not record Jesus' miracles in strict chronological order.362His order is more thematic. He also selected miracles that highlight the gracious character of Jesus' signs. As Moses' plagues authenticated his ministry to the Israelites of his day, so Jesus' miracles should have convinced the Israelites of His day that He was the Messiah. Moses' plagues were primarily destructive whereas Jesus' miracles were primarily constructive. Jesus' miracles were more like Elisha's than Moses' in this respect.
Matthew recorded nine of Jesus' miracles and referred to others. He presented these in three groups and broke the three groups up with two discussions about discipleship. The first group of miracles involves healings (8:1-17), the second, demonstrations of power (8:23-9:8), and the third, acts of restoration (9:18-34).