‘Behold I come quickly, and my reward is with me to render to each man according to his work (his attitude and behaviour).'
Again without warning we find words of Jesus Christ. John expects us to use discernment. (John's Gospel also ends in statements whose author or authors the discerning reader has to determine - John 21:24-25). We have the same vagueness here). Again we are solemnly warned by Christ that His coming is imminent, and that when He comes all must give account (see Revelation 2:23; Revelation 20:12).