8:4 See thou tell no man - Perhaps our Lord only meant here, Not till thou hast showed thyself to the priest - who was appointed to inquire into the case of leprosy. But many others he commanded, absolutely, to tell none of tho miracles he had wrought upon them. And this he seems to have done, chiefly for one or more of these reasons: To prevent the multitude from thronging him, in the manner related Mark 1:45. To fulfil the prophecy, Isaiah 42:1, that he would not be vain or ostentatious. This reason St. Matthew assigns, Matt 12:17, and c. To avoid the being taken by force and made a king, John 6:15. And, That he might not enrage the chief priests, scribes, and Pharisees, who were the most bitter against him, any more than was unavoidable, Matt 16:20,21. For a testimony - That I am the Messiah; to them - The priests, who otherwise might have pleaded want of evidence. Lev 14:2.

Matthew 8:4 Parallel Commentaries

The Faith which Christ Praises
'The centurion answered and said: Lord, I am not worthy that Thou shouldest come under my roof, but speak the word only, and my servant shall be healed. 9. For I am a man under authority, having soldiers under me: and I say to this man, Go! and he goeth; and to another, Come I and he cometh; and to my servant, Do this; and he doeth it.'--MATT. viii. 8-9. This miracle of the healing of the centurion's servant is the second of the great series which Matthew gives us. It is perhaps not accidental that …
Alexander Maclaren—Expositions of Holy Scripture

The Cross and Crown.
At last He cried, with a loud voice: "It is finished!" Perhaps not many on earth heard it, or cared about it when they did hear it; but I can imagine there were not many in heaven who did not hear it, and if they have bells in heaven how they must have rung out that day; "It is finished! It is finished!" The Son of God had died that poor sinful man might have life eternal. I can imagine the angels walking through the streets of heaven crying: "It is finished!" and the mansions of that world ringing …
Dwight L. Moody—Moody's Anecdotes And Illustrations

On the Words of the Gospel, Matt. viii. 23, "And when He was Entered into a Boat," Etc.
1. By the Lord's blessing, I will address you upon the lesson of the Holy Gospel which has just been read, and take occasion thereby to exhort you, that against the tempest and waves of this world, faith sleep not in your hearts. "For the Lord Christ had not indeed death nor sleep in His power, and peradventure sleep overcame the Almighty One as He was sailing against His will?" If ye believe this, He is asleep in you; but if Christ be awake in you, your faith is awake. The Apostle saith, "that Christ …
Saint Augustine—sermons on selected lessons of the new testament