9Anyone who claims to be in the light but hates a brother or sister2:9 The Greek word for brother or sister (adelphos) refers here to a believer, whether man or woman, as part of God’s family; also in verse 11; and in 3:15, 17; 4:20; 5:16. is still in the darkness.
9The one who says he is in the Light [in consistent fellowship with Christ] and yet 2:9 This focuses more on the self-centered, hateful actions (not the emotion) of someone who habitually cultivates an obstructionistic attitude, and ignores the command to act in a way that expresses unselfish Christian love (see note v 10).habitually hates (works against) his brother [in Christ] is in the darkness until now.