Everyone who has this hope set on him purifies himself, even as he is pure.

 (i) It could mean: since our hearts condemn us and God is infinitely greater than our hearts, God must condemn us even more. If we take it that way, it leaves us only with the fear of God and with nothing to say but: "God be merciful to me, a sinner." That is a possible translation and no doubt it is true; but it is not what John is saying in this context, for here he is thinking of our confidence in God and not our dread of him. 