John Chrysostom (attributed)

(Chrys. ubi sup.) We may here well inquire, why Christ forbids the healed demoniac who wished to follow Him, but permits the blind man who had received his sight. There seems to be a good reason for both the one case and the other. He sends away the former as a kind of herald, to proclaim aloud by the evidence of his own state his benefactor, for it was indeed a notable miracle to see a raving madman brought to a sound mind. But the blind man He allows to follow Him, since He was going up to Jerusalem about to accomplish the high mystery of the Cross, that men having a recent report of a miracle might not suppose that He suffered so much from helplessness as from compassion.