Matthew 18:15

If your brother sins against you, go and confront him privately. If he listens to you, you have won your brother over.

Note NE and WH do not include against you.

BSB · Berean Standard Bible
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.
KJV · King James Version
“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.
WEB · World English Bible
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.
ASV · American Standard Version

Related passages

From the Treasury of Scripture Knowledge, grouped by the word they explain.

if
Matthew 18:35; Leviticus 6:2–7; Luke 17:3, 4; 1 Corinthians 6:6–8; 1 Corinthians 8:12; 2 Corinthians 7:12; Colossians 3:13; 1 Thessalonians 4:6
go
Leviticus 19:17; Psalm 141:5; Proverbs 25:9, 10
thou hast
Proverbs 11:30; Romans 12:21; 1 Corinthians 9:19–21; James 5:19, 20; 1 Peter 3:1