Matthew 18:15

13 And if so be that he find it, verily I say unto you, he rejoiceth more of that sheep, than of the ninety and nine which went not astray.

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

Moreover if thy brother shall trespass against thee, go and tell him his fault between thee and him alone: if he shall hear thee, thou hast gained thy brother.

16 But if he will not hear thee, then take with thee one or two more, that in the mouth of two or three witnesses every word may be established.

17 And if he shall neglect to hear them, tell it unto the church: but if he neglect to hear the church, let him be unto thee as an heathen man and a publican.

Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB
If your brother sins against you, go and confront him privately. If he listens to you, you have won your brother over.
KJV
Moreover if thy brother shall trespass against thee, go and tell him his fault between thee and him alone: if he shall hear thee, thou hast gained thy brother.
WEB
“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.
ASV
And if thy brother sin against thee, go, show him his fault between thee and him alone: if he hear thee, thou hast gained thy brother.
DARBY
But if thy brother sin against thee, go, reprove him between thee and him alone. If he hear thee, thou hast gained thy brother.
BLB
And if your brother may sin against you, go reprove him between you and him alone. If he may hear you, you have gained your brother.
ÅB
«Men om din bror synder mot deg, så gå til ham og irettesett ham i enrom! Om han hører på deg så har du vunnet din bror.
OTB
«Hvis din bror eller søster synder, gå og vis dem deres feil i det private; hvis de lytter til deg, har du vunnet dem.
B1930
Men om din bror synder mot dig, da gå bort og irettesett ham i enrum! hører han på dig, da har du vunnet din bror;

Study notes (Tyndale)

Original text and word study

Cross references