Whenever the Lord God Father in Heaven decides that the kingdom must fully manifest, the Lord God Almighty will know that it is his turn to take the helm and enter into the earth realm. That probably will not occur for at least another thousand years because at the rate at which repentance is occurring, the earth still has a very long way to go before certain aspects of the kingdom become fully manifest.
For example, although eternal life is promised for everyone who currently is in the millennial kingdom, many people have chosen to surrender to death and to leave the kingdom and its many promises. You should know that the millennial kingdom of God exists only in this earth. If you choose to leave the earth, you no longer will be in the millennial kingdom, and you will have forfeited all of the benefits for which you have been waiting expectantly. You cannot willingly surrender to death, and yet remain in the millennial kingdom of God.
The Lord God Almighty El Shaddai