The kingdom of God is a vast moral kingdom with the Son of man at its head, God having committed it to Him forever. 2 Peter 1:11. John 5:22. This eternal kingdom will be distinct from the millennial kingdom. In the kingdom of God all will have a new nature joyfully subject to Christ and the Father, and grace will rule our souls in liberty and peace.
All mankind and angels will be the inhabitants of this kingdom, all authority will be in the hands of Christ as a man forever, with the Church. Rev. 21:10. Christ will be head of the government, over the creation as a man. The heavenly Jerusalem will be the seat of the government.
"Now unto the King eternal, immortal, invisible, the only wise God, be honor and glory forever and ever. Amen." 1 Tim. 1:17.
"Which in his times he shall show, who is the blessed and only Potentate, the King of kings, and Lord of lords; Who only hath immortality, dwelling in the light which no man can approach unto; whom no man hath seen, nor can see: to whom be honor and power everlasting. Amen." 1 Tim. 6:15,16.
"For so an entrance shall be ministered unto you abundantly into the everlasting kingdom of our Lord and Savior Jesus Christ." 2 Peter 1:11. What an entrance! and it can be so. Do you think that one who has forgotten that he was purged from his old sins and has begun to walk in a worldly way will enjoy an abundant entrance? The judgment seat of Christ will reveal this. The believer, though, will have an entrance.
"Wherefore we receiving a kingdom which cannot be moved, let us have grace, whereby we may serve God acceptably with reverence and godly fear." Heb. 12:28.
"If we suffer, we shall also reign with him." 2 Tim. 2:12.