Some thoughts on "the Kingdom of God"
The vast majority of references (in the Gospels) to this Kingdom are to a future reality, with a smaller number of references to Christ Himself, and the power through which He works (including His Words).
Indeed each time a person says the prayer instructed to us "thy Kingdom come" one acknowledges that future scenario, not a present state of affairs.
At His temptation, it is Satan that claims authority over the Governments of the earth, and offers them to Christ in return for worship and obedience. Christ's response is to direct the adversary to obey God only and worship Him, He does not correct Satan on the authority of which the governments fall.
The original and first governments (or man-made Kingdom) of men among the ancient Hebrews was a rejection of God. Before Saul is made King, God tells Samuel that it is Him they rejected in wanting a King for themselves. (1 Samuel 8:7). What follows are several warnings of what this King will do to them, none of which are good.
Christ is put to death by the government of the day, in part for claiming to be a King. When asked by a representative of this government (Pilate) He acknowledges He is a King, but that His Kingdom "is not of this world".
Post Resurrection, there is nothing to indicate, in the Acts or other Historical records to date, that the "Kingdom of God" is here. The world continues to be an evil place, that, while there is some justice, there is an atrocious amount of corruption and evil in the various governments that have ruled men since. The History of men's "Kingdoms" and governments is a history of human evil and slaughter, at times tempered by uprisings and mutual agreements for the betterment of mankind and for human rights, but much more vastly a tale of inhumanity and evil.
Saul/Paul (his name, just coincidentally, the same as the first King Israel knew) preaches that God sets up governments to rule for God. Taking everything into account from the first century until now, God's "governments" are nominal at best, sometimes dispensing judgement and mercy, much more often furthering evil and oppressing peoples.
