This is the word which came to us from him and which we give to you, that God is light and in him there is nothing dark.

If we say we are joined to him, and are walking still in the dark, our words are false and our acts are untrue:

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

But the one who habitually hates (works against) his brother [in Christ] is in [spiritual] darkness and is walking in the darkness, and does not know where he is going because the darkness has blinded his eyes.