Matthew 18:12-15

What do you think? If a man has a hundred sheep, and one of them has gone astray, does he not leave the ninety-nine on the mountains and go in search of the one that went astray? And if he finds it, truly, I say to you, he rejoices over it more than over the ninety-nine that never went astray. So it is not the will of my Father who is in heaven that one of these little ones should perish. “If your brother sins against you, go and tell him his fault, between you and him alone. If he listens to you, you have gained your brother.