Matthew 18:12-15

“What do you think? If a man has a hundred sheep, and one of them gets lost, will he not leave the ninety-nine on the mountain and go in search of the one that is lost? [Luke 15:4-7] And if it turns out that he finds it, I assure you and most solemnly say to you, he rejoices over it more than over the ninety-nine that did not get lost. So it is not the will of your Father who is in heaven that one of these little ones be lost. “If your brother sins, go and show him his fault in private; if he listens and pays attention to you, you have won back your brother.