How many Kingdoms are there? What does Scripture say?
The Apostle Matthew writes in his account of the mission of the Christ, the Messiah, as follows:
Matthew 3:1-3, KJV
1. In those days came John the Baptist, preaching in the wilderness of Judaea,
2. And saying, Repent ye: for the kingdom of heaven is at hand.
3. For this is he that was spoken of by the prophet Esaias, saying, The voice of one crying in the wilderness, Prepare ye the way of the Lord, make his paths straight.
According to John the Baptist the Kingdom of Heaven is at hand as he announces the coming of the Lord. Matthew writes further:
Matthew 4:23, KJV
23. And Jesus went about all Galilee, teaching in their synagogues, and preaching the gospel of the kingdom, and healing all manner of sickness and all manner of disease among the people.
Matthew 9:35, KJV
35. And Jesus went about all the cities and villages, teaching in their synagogues, and preaching the gospel of the kingdom, and healing every sickness and every disease among the people.
Matthew 24:14, KJV
14. And this gospel of the kingdom shall be preached in all the world for a witness unto all nations; and then shall the end come.
According to Matthew’s account Jesus Christ is preaching the Gospel of the Kingdom. Perhaps Matthew is somewhat ambiguous, but Mark is not. John Mark opens his account of the ministry of Jesus Christ as follows:
Mark 1:1, KJV
1. The beginning of the gospel of Jesus Christ, the Son of God;
Mark in writing a parallel account of the life of Jesus Christ declares he is writing about the Gospel of Jesus Christ. Mark further writes about the Gospel quoting Jesus Christ Himself:
Mark 1:14-15, KJV
14. Now after that John was put in prison, Jesus came into Galilee, preaching the gospel of the kingdom of God,
15. And saying, The time is fulfilled, and the kingdom of God is at hand: repent ye, and believe the gospel.
From these two passages in the Gospel according to Mark it is obvious that the gospel of Jesus Christ and gospel of the kingdom of God are the same.
Luke’s account of the life of Jesus Christ quotes Him as follows:
Luke 4:43, KJV
43. And he said unto them, I must preach the kingdom of God to other cities also: for therefore am I sent.
John the Baptist preached that the Kingdom of Heaven is at hand. Jesus Christ taught that the Kingdom of God is at hand. Obviously the kingdoms are the same. The term Kingdom of Heaven appears only in the Gospel of Matthew; the term Kingdom of God is used on five occasions[Matthew 6:33; 12:28; 19:24, 21:31; 21:43]. Mark, Luke, and John use the term Kingdom of God only. Jesus Christ used both terms but generally referred to the Kingdom of God. Some have argued that there is a difference between the Kingdom of God and the Kingdom of Heaven. Walvoord [page 213, Major Bible Prophecies] states that when Matthew uses the term Kingdom of Heaven he is referring to the sphere of profession but that when he uses the term Kingdom of God he is referring to those who are truly saved. However, a comparison of parallel passages in Matthew, Mark, and Luke shows that Matthew uses the Kingdom of Heaven in the same context that Mark and Luke use of the Kingdom of God. A comparison of the explanation of Jesus Christ as to why He spoke in parables [following the parable of the sower] demonstrates without doubt that there is no difference in Matthew’s use of the Kingdom of Heaven and Mark’s and Luke’s use of the Kingdom of God.
Matthew 13:10,11, KJV
10. And the disciples came, and said unto him, Why speakest thou unto them in parables?
11. He answered and said unto them, Because it is given unto you to know the mysteries of the kingdom of heaven, but to them it is not given.
Mark 4:10,11, KJV
10. And when he was alone, they that were about him with the twelve asked of him the parable.
11. And he said unto them, Unto you it is given to know the mystery of the kingdom of God: but unto them that are without, all [these] things are done in parables:
Luke 8:9,10, KJV
9. And his disciples asked him, saying, What might this parable be?
10. And he said, Unto you it is given to know the mysteries of the kingdom of God: but to others in parables; that seeing they might not see, and hearing they might not understand.
Any attempt to distinguish between the Kingdom of Heaven and the Kingdom of God is just more dispensational nonsense.