Since the day the world was created until the present time the world has not attained perfection. Everything depends on man’s deeds. Had man not sinned, the universe would have come to perfection. Because of his sin, it was not perfected. So far the creation has only come to the level of rectification corresponding to Wisdom. But there is a far greater, higher level that is still to be attained. For when the hidden beginning (Keter) is revealed in all its power and glory, all the lights will come to a far greater, higher level, after which there will be no more decline. The lights have not yet attained this level, but in time to come they will indeed attain it. And then abundant good will come into the world. Peace and tranquility will reign everywhere, and sadness and sighing will be banished. Of those days it is said: “On that day YHVH will be one and His Name one”.
— Chaim Luzzatto “The Secrets of the Future Temple”