Jesus, Master [1] It is evident that all of them possessed some measure of faith, not only because they implore Christ's assistance, but because they honor him with the title of Master That they made use of that expression sincerely, and not in hypocrisy, may be inferred from their ready obedience; for, although they perceive that the filthy scab still remains in their flesh, yet as soon as they are commanded to show themselves to the priests, they do not refuse to obey. Add to this that, but for the influence of faith, they would never have set out to show themselves to the priests; for it would have been absurd to present themselves to the judges of leprosy, for the purpose of attesting that they had been cleansed, if the promise of Christ had been regarded by them as of no more value than a mere inspection of the disease. They bear a visible leprosy in their flesh; and yet, trusting to Christ's word alone, they have no scruple about declaring that they are clean. It cannot therefore be denied, that some seed of faith had been implanted in their hearts. Now though it is certain that they were not regenerated by the Spirit of adoption, yet there is no absurdity in supposing that they had some beginnings of piety. There is the greater reason to fear that sparks of faith, which make their appearance in us, may be extinguished; for, although lively faith, which has its roots deeply fixed by the Spirit of regeneration, never dies, yet we have seen formerly that many conceive a temporary faith, which immediately disappears. Above all, it is too common a disease that, when we are urged by strong necessity, and when the Lord himself prompts us by a secret movement of the Spirit, we seek God, but, when we have obtained our wishes, ungrateful forgetfulness swallows up that feeling of piety. Thus poverty and hunger beget faith, but abundance kills it.

Footnotes

1 - "Iesus, nostre Maistre;" -- "Jesus,our Master."

They lifted up their voices - They cried with one accord - they were all equally necessitous, and there was but one voice among them all, though ten were engaged in crying at the same time. As they were companions in suffering, they were also companions in prayer. Prayer should be strong and earnest, when the disease is great and inveterate. Sin is the worst of all leprosies; it not only separates those to whom it cleaves from the righteous, but it separates them from God; and nothing but the pitying heart and powerful hand of Christ Jesus can set any soul free from it.

And they lifted up their voices,.... Together, and cried aloud, being at a distance, that they might be heard; as well as to express their vehement desire, and great importunity to be cleansed; see Judges 9:7.
And said, Jesus, Master; or "Rabbi, Jesus", thou great Master in Israel; who art a teacher come from God, and who dost surprising miracles, and art able to cure us:
have mercy on us; and cleanse us from our leprosy; we believe thou art able, if thou wilt; show compassion to us, miserable objects, as they were; their faith was the same with that of the other leper, in Matthew 8:2.

they lifted up--their common misery drawing these poor outcasts together (2-Kings 7:3), nay, making them forget the fierce national antipathy of Jew and Samaritan [TRENCH].
Jesus, &c.--(Compare Matthew 20:30-33). How quick a teacher is felt misery, even though as here the teaching may be soon forgotten!