John Chrysostom
Catena Aurea · Matthäusevangelium 4
And Jesus went about all Galilee, teaching in their synagogues, and preaching the Gospel of the kingdom, and healing all manner of sickness and all manner of disease among the people. And His fame went throughout all Syria: and they brought unto Him all sick people that were taken with divers diseases and torments, and those which were possessed with devils, and those which were lunatick, and those that had the palsy; and He healed them. And there followed Him great multitudes of people from Galilee, and from Decapolis, and from Jerusalem, and from Judæa, and from beyond Jordan.
We must consider that when some great change is being wrought, as the introduction of a new polity, God is wont to work miracles, giving pledges of His power to those who are to receive His laws. Thus when He would make man, He first created a world, and then at length gave man in paradise a law. When He would dispense a law to the holy Noah, he shewed truly great wonders; and again when He was about to ordain the Law for the Jews, He first shewed great prodigies, and then at length gave them the commandments. So now when about to introduce a sublime discipline of life, He first provided a sanction to His instructions by mighty signs, because the eternal kingdom He preached was not seen, by the things which did appear, He made sure that which as yet did not appear.