The NKJ version says
1 John 2:9
He who says he is in the light, and hates his brother, is in darkness until now.
Got me thinking about who a brother is. Is it a countryman, another believer, a family member, any other human being? Here’s from the God’s Word Translation-
1 John 2:9
Those who say that they are in the light but hate other believers are still in the dark.