Try to grasp this.
“But if I with the finger of God cast out devils, no doubt the kingdom of God is come upon you.” Luke 11:20 (KJV 1900)
“And when thy days [David] be fulfilled, and thou shalt sleep with thy fathers, I will set up thy seed after thee, which shall proceed out of thy bowels, and I will establish his kingdom.” 2 Samuel 7:12 (KJV 1900)
Jesus reigns from David's throne now, before David's resurrection on the last day. But only the born again can see it by faith.
“Which he wrought in Christ, when he raised him from the dead, and set him at his own right hand in the heavenly places, Far above all principality, and power, and might, and dominion, and every name that is named, not only in this world, but also in that which is to come: And hath put all things under his feet, and gave him to be the head over all things to the church, Which is his body, the fulness of him that filleth all in all.” Ephesians 1:20–23 (KJV 1900)
“Jesus answered and said unto him, Verily, verily, I say unto thee, Except a man be born again, he cannot see the kingdom of God.” John 3:3 (KJV 1900)
Romans 14:17 For the kingdom of God is not meat and drink; but righteousness, and peace, and joy in the Holy Ghost.
14:18 For he that in these things serveth Christ is acceptable to God, and approved of men.
Brother Glen