2 Thessalonians 3:15

15 Yet do not regard them as an enemy, but warn them as you would a fellow believer.

Read 2 Thessalonians 3:15 Using Other Translations

Yet count him not as an enemy, but admonish him as a brother.
Do not regard him as an enemy, but warn him as a brother.
Don’t think of them as enemies, but warn them as you would a brother or sister.