Matthew 18:15 WEB

¹³  If he finds it, most assuredly I tell you, he rejoices over it more than over the ninety-nine which have not gone astray.

¹⁴  Even so it is not the will of your Father who is in heaven that one of these little ones should perish.

¹⁵  'If your brother sins against you, go, show him his fault between you and him alone. If he listens to you, you have gained back your brother.

¹⁶  But if he doesn't listen, take one or two more with you, that at the mouth of two or three witnesses every word may be established.

¹⁷  If he refuses to listen to them, tell it to the assembly. If he refuses to hear the assembly also, let him be to you as a Gentile or a tax collector.