Luke 17:8 (KJV)

Take heed to yourselves: If thy brother trespass against thee, rebuke him; and if he repent, forgive him.

And if he trespass against thee seven times in a day, and seven times in a day turn again to thee, saying, I repent; thou shalt forgive him.

And the apostles said unto the Lord, Increase our faith.

And the Lord said, If ye had faith as a grain of mustard seed, ye might say unto this sycamine tree, Be thou plucked up by the root, and be thou planted in the sea; and it should obey you.

But which of you, having a servant plowing or feeding cattle, will say unto him by and by, when he is come from the field, Go and sit down to meat?

Doth he thank that servant because he did the things that were commanded him? I trow not.

So likewise ye, when ye shall have done all those things which are commanded you, say, We are unprofitable servants: we have done that which was our duty to do.

And it came to pass, as he went to Jerusalem, that he passed through the midst of Samaria and Galilee.

And as he entered into a certain village, there met him ten men that were lepers, which stood afar off:

And they lifted up their voices, and said, Jesus, Master, have mercy on us.