1 John 2:8-11 New Revised Standard Version (NRSV)
8 Yet I am writing you a new commandment that is true in him and in you, because[a] the darkness is passing away and the true light is already shining. 9 Whoever says, “I am in the light,” while hating a brother or sister,[b] is still in the darkness. 10 Whoever loves a brother or sister[c] lives in the light, and in such a person[d] there is no cause for stumbling. 11 But whoever hates another believer[e] is in the darkness, walks in the darkness, and does not know the way to go, because the darkness has brought on blindness.