Mark 1:1,14 The beginning of the gospel of Jesus Christ, the Son of God; Now after that John was put in prison, Jesus came into Galilee, preaching the gospel of the kingdom of God,
Acts 1:6 When they therefore were come together, they asked of him, saying, Lord, wilt thou at this time restore again the kingdom to Israel?
For three and a half years the disciples had heard Jesus preach about the kingdom of God. Everything Jesus taught concerned the kingdom of God. It is evident to me at least they associated the kingdom of God with Israel.
Lord teach us to pray. thy kingdom come thy will be done on earth.
David sat on the throne of the Eternal here on the earth.
However, that which is born of the flesh IS flesh. and flesh and blood cannot inherit the kingdom of God. As long as we are flesh we cannot see nor enter the kingdom of God. God made man, Adam a living soul, flesh and blood subject to death and corruption.
God beget his Son in the woman taken from the man and he was born a man child, flesh and blood, who did no sin and this man child died to redeem sinful man from corruption. This redemption could only take place if this sinless one was given new life from the dead. 1 Cor. 15:16-18 If Christ be not raised from the dead, means he would still be dead, all would still be in their sin and all would perish upon death. This resurrection of Jesus that redeemed you through his shed blood is called by Paul in Titus 3:5 the washing of regeneration and renewing of the Holy Spirit. Per Paul in Romans 5 you are reconciled by his blood and shall be saved by his life. His resurrected/regenerated life.
God is birthing through his only begotten man child resurrected Son a new man spiritually fit for the kingdom of God, born again in his spirit image. This will take place in a moment in the twinkling of an eye at the last trump.
And the seventh angel sounded; and there were great voices in heaven, saying, The kingdoms of this world are become [the kingdoms] of our Lord, and of his Christ; and he shall reign for ever and ever. And the nations were angry, and thy wrath is come, and the time of the dead, that they should be judged, and that thou shouldest give reward unto thy servants the prophets, and to the saints, and them that fear thy name, small and great; and shouldest destroy them which destroy the earth.