Read Luke 17:11-19

JESUS HEALS TEN MEN WITH LEPROSY
People who had leprosy were required to try to say away from other people and to announce their presence if they had to come near. Sometimes leprosy went into remission. If a leper thought his leprosy had gone away, he was supposed to present himself to a priest, who could declare him clean. Jesus sent the ten lepers to the priest before they were healed – and they went! They responded in faith, and Jesus healed them on the way. Is your trust in God so strong that you act on what He says ever before you see evidence that it will work?
The one that came back to thank Jesus, was not only a leper, he was also a Samaritan – a race despised by the Jews as idolatrous half breeds. Once again Luke is pointing out that God’s grace is for every one.
Jesus healed all ten lepers, but only one returned to thank Him. It is possible to receive God’s great gifts with an ungrateful spirit. Only the thankful man, however, learned that faith played a role in his healing; and only grateful Christians grow in understanding God’s grace. God does not demand that you thank Him, but He is pleased when you do so. And He uses your responsiveness to teach you more about Himself.