But he who hates his brother is in the darkness, and walks in the darkness, and doesn't know where he is going, because the darkness has blinded his eyes.

 In this verse we meet the conception of Antichrist. Antichrist is a word which occurs only in John's letters in the New Testament ( 1 John 2:22; 1 John 4:3; 2 John 1:7); but it is the expression of an idea which is as old as religion itself. 