THE KINGDOM OF THE HEAVENS AND THE KINGDOM OF GOD
(IN A NUTSHELL)
It seems that many Bible expositors agree that the Kingdom of God is larger (extending from eternity past to eternity future) than the Kingdom of the heavens. But they disagree on what the kingdom of the heavens is.
I quote from Appendix 114 in the Companion Bible:
“We have seen in Ap. 112 that the word "kingdom", like the Greek basileia, has regard to sovereignty rather than territory, and to the sphere of its exercise rather than to its extent.* Using the word "kingdom" in this sense, and in that which is conveyed in its English termination "dom", which is short for dominion, we note that the former expression, "the Kingdom of heaven", occurs only in Matthew, where we find it thirty-two times (*1).
But in the parallel passages in the other Gospels we find, instead, the expression "the Kingdom of God" (e.g. cp. Matt. 11:11 with Luke 7:28). The explanation of this seeming difference is that the Lord spoke in Aramaic; certainly not in the Greek of the Gospel documents.* See Ap. 94. III.
Now "heaven" is frequently used by the Figure Metonymy (of the Subject), Ap. 6 for God Himself, Whose dwelling is there.* See Ps. 73:9.* Dan. 4:26, 29.* 2Chron. 32:20.* Matt. 21:25.* Luke 15:21 ("I have sinned against heaven" is thus contrasted with the words "and in thy sight").* John 3:27.
Our suggestion is that in all the passages where the respective expressions occur, identical words were spoken by the Lord, "the Kingdom of heaven"; but when it came to putting them into Greek, Matthew was Divinely guided to retain the figure of speech literally ("heaven"), so as to be in keeping with the special character, design, and scope of his Gospel (see Ap. 96); while, in the other Gospels, the figure was translated as being what it also meant, "the Kingdom of God".
Thus, while the same in a general sense, the two expressions are to be distinguished in their meaning and in their interpretation, as follows :--
I. The Kingdom (or Sovereignty) of HEAVEN
1. Has Messiah for its King;
2. It is from heaven; and under the heavens upon the earth;
3. It is limited in its scope;
4. It is political in its sphere;
5. It is Jewish and exclusive in its character;
6. It is national in its aspect;
7. It is the special subject of Old Testament prophecy;
8. * And it is dispensational in its duration.
II. The Kingdom (or Sovereignty) of GOD
1. Has God for its Ruler;
2. It is in heaven, over the earth;
3. It is unlimited in its scope;
4. It is moral and spiritual in its sphere;
5. It is inclusive in its character (embracing the natural and spiritual seeds of Abraham, "the heavenly calling", and the "Church" of the Mystery).* Hence,
6. It is universal in its aspect;
7. It is (in its wider aspect) the subject of New Testament revelation;
8. And will be eternal in its duration.
(*1)* The Kingdom of God occurs only five times in Matt. (6:33; 12:28; 19:24; 21:31, 43).”
THE THEOCRATIC KINGDOM (YOU NEED MILLIONS OF NUTSHELLS)
For those interested, and with lots of time (the three books have a total of 2175 pages) they can read an amazing book ( it took the author 30 years to complete it):
The Theocratic Kingdom of Our Lord Jesus: The Christ, As Covenanted in the Old Testament, and Presented in the New Testament
by George Nathaniel Henry Peters
as always...