Albert Barnes' Notes on the Whole Bible - Luke 17:15-16
One of them ... - This man, sensible of the power of God and grateful for his mercies, returned to express his gratitude to God for his goodness. Instead of obeying “at once” the “letter” of the command, he “first” expressed his thanks to God and to his Great Benefactor. There is no evidence, however, that he did not, “after” he had given thanks to God, and had poured out his joy at the feet of Jesus, go to the priest as he was directed; indeed, he could not have been restored to society... read more
The Pulpit Commentary - Luke 17:19
Thy faith hath made thee whole. This was something more than the first noble gift, which he, in common with his nine fellow-sufferers, had received. A new power was his from that day forth. Closely united to his Master, we may think of the poor unknown Samaritan for ever among the friends of Jesus here and in the world to come. There are degrees in grace here. The nine had faith enough to believe implicitly in the Master's power, and in consequence they received his glorious gift of health... read more