Patristic Wisdom: Looking to the Eighteenth Sunday after Pentecost

Now it happened as He went to Jerusalem that He passed through the midst of Samaria and Galilee. Then as He entered a certain village, there met Him ten men who were lepers, who stood afar off. And they lifted up their voices and said, “Jesus, Master, have mercy on us!” So when He saw them, He said to them, “Go, show yourselves to the priests.” And so it was that as they went, they were cleansed. And one of them, when he saw that he was healed, returned, and with a loud voice glorified God, and fell down on his face at His feet, giving Him thanks. And he was a Samaritan. So Jesus answered and said, “Were there not ten cleansed? But where are the nine? Were there not any found who returned to give glory to God except this foreigner?” And He said to him, “Arise, go your way. Your faith has made you well.” (Luke 17:11–19)

And why did He not rather say, “I will, be cleansed;” as he did in the case of another leper; but commanded them rather to show themselves unto the priests? It was because the law gave directions to this effect to those who were delivered from leprosy: for it commanded them to shew themselves to the priests, and to offer a sacrifice for their cleansing. He commanded them therefore to go, as being already healed, and, that they might, so to speak, bear witness to the priests, as the rulers of the Jews, and ever envious of His glory, that wonderfully, and beyond their hope, they had been delivered from their misfortune by Christ’s willing that they should be healed. He did not heal them first, but sent them to the priests, because the priests knew the marks of leprosy, and of its being healed. He sent them to the priests, and with them He sent also the healing. … The nine then, as being Jews, falling into a thankless forgetfulness, did not return to give glory to God: by which He shews that Israel was hard of heart, and utterly unthankful: but the stranger,—for as being a Samaritan he was of foreign race, having been brought thither from Assyria: for the phrase is not without meaning, “in the middle of Samaria and Galilee:”—returned with a loud voice to glorify God. It shews therefore that the Samaritans were grateful, but that the Jews, even when benefited, were ungrateful.

Cyril of Alexandria, Commentary on Luke Homilies 113–116