1 John 2:9-11 (New King James Version)

⁹ He who says he is in the light, and hates his brother, is in darkness until now. ¹⁰ He who loves his brother abides in the light, and there is no cause for stumbling in him. ¹¹ But he who hates his brother is in darkness and walks in darkness, and does not know where he is going, because the darkness has blinded his eyes.