The Cleansing of Ten Lepers

The Savior next manifests His glory by drawing Israel over to the faith. As it follows, "And as he entered into a certain village, there met him ten men that were lepers," men who were banished from the towns and cities, and considered unclean according to the rites of the Mosaic law. They stayed together from the sympathy they felt as partakers of the same calamity, and were waiting till Jesus passed, anxiously looking out to see Him approach. As it is said, "Which stood afar off," for the Jewish law calls leprosy unclean, whereas the law of the Gospel does not call the outward unclean, but the inward leprosy.

They therefore stand far off as if ashamed of the uncleanness which was impaled to them, thinking that Christ would loathe them as others did. So they stood afar off, but were made aware to Him by their prayers. For the Lord is aware of all that call upon Him in truth. Therefore it follows, "And they lifted up their voices, and said, 'Jesus, Master, have mercy upon us.'"

They pronounce the name of Jesus, and Jesus appears. For Jesus is by interpretation Savior. They say, "Have mercy upon us," because they were aware of His power, and sought neither gold and silver, but that their bodies might be healthy again. They do not merely ask Him as if He were a man, but they call Him Master or Lord, as if they looked upon Him as God. But He bids them show themselves to the priests, as it follows, "And when he saw them, he said, Go, show yourselves to the priests." For they were examined whether they were cleansed from their leprosy or not. The law also ordered, that those who were cleansed from leprosy should offer sacrifice for the sake of their purification. Therefore in bidding them go to the priests Jesus meant nothing more than that they were just about to be healed.

But out of the ten, the nine Israelites were ungrateful, whereas the Samaritan returned and lifted up his voice in thanksgiving. We may gather from this that a man is not in any way hindered from pleasing God because he comes from a race cursed by the Jews, only that he bears in his heart an honest purpose. Further, let him that is born of saints not boast, for the nine who were Israelites were ungrateful. By this it is shown, that strangers were more ready to receive the faith, but Israel was slow to believe as it is now with that some converts receive the faith with far greater zeal than those born into the faith. And so it follows, "And he said to him, Arise, go your way, your faith has made you whole."

參考 References:
Catena Aurea (St. Thomas Aquinas)
Sermons 113-116 (fragments), Commentary on Luke (St. Cyril of Alexandria)
Commentaries on the Gospels (Titus Bostrensis)
Explanations on the New Testament (St. Theophylact of Ochrid)