^{9 Ref} He who says that he is in the light, and has hate in his heart for his brother, is still in the dark.

^{10 Ref} He who has love for his brother is in the light, and there is no cause of error in him.

^{11 Ref} But he who has hate for his brother is in the dark, walking in the dark with no knowledge of where he is going, unable to see because of the dark.