These are two great lights, the lights of the night and the day, the sun and the moon, which have to be the same in the future.
The point is that the moon illuminates by the light that comes from the sun, but the earth conceals it from the sun. When the earth will fully conceal the moon and, on the other hand, when it is corrected, it will not be a Masach (screen), and it will outshine it, the moon will begin to illuminate like the sun, which is the state we have to reach.
This means that Malchut, our previous ego that will be corrected to bestow unto others and to love others, will begin to illuminate like the Creator. Then the two great lights will not illuminate for themselves but each other.
From KabTV’s “Secrets of the Eternal Book” 12/6/13