After more than 67 years of life, I have no answer for this. I can't even imagine a world (or universe) completely devoid of any evil ever again. Never another derogatory comment? Never a word spoken in anger? Never one of the "multitude who could not be counted" envying a member of the 144,000? Never any gossip about "how did HE/SHE make it to the Kingdom"? It's impossible for me to even imagine that this is possible. But God said it would happen; and it sure would be nice! I'm looking forward to it with great curiosity and anticipation!