1 John 2:9

9 Anyone who claims to be in the light but hates a brother or sistera is still in the darkness.

Read 1 John 2:9 Using Other Translations

He that saith he is in the light, and hateth his brother, is in darkness even until now.
Whoever says he is in the light and hates his brother is still in darkness.
If anyone claims, “I am living in the light,” but hates a fellow believer, that person is still living in darkness.