Find this to be a very interesting subject, so I did a little more research and thought I'd share my findings.
One of the synonyms given for
realm is
kingdom.
realm
relm/
noun
LAW
archaic
literary
a kingdom.
"the peers of the realm"
synonyms:kingdom, country, land, dominion, nation
"peace in the realm"
Luk_17:21 Neither shall they say, Lo here! or, lo there! for, behold, the kingdom of God is within you.
1Pe 2:9 But ye are a chosen generation, a royal priesthood,
an holy nation, a peculiar people; that ye should shew forth the praises of him who hath called you out of darkness into his marvellous light:
1Pe 2:10 Which in time past were not a people, but are now the people of God: which had not obtained mercy, but now have obtained mercy.
Ray from an email once said: "God's heaven is a higher spiritual realm of life and existence, not a geographical location in outer space."
https://bible-truths.com/email4.htm#MuslimThen I found this.
Mar 12:32 And the scribe said unto him, Well, Master, thou hast said the truth: for there is one God; and there is none other but he:
Mar 12:33 And to love him with all the heart, and with all the understanding, and with all the soul, and with all the strength, and to love his neighbour as himself, is more than all whole burnt offerings and sacrifices.
Mar 12:34 And when Jesus saw that he answered discreetly, he said unto him, Thou art not far from the kingdom of God. And no man after that durst ask him any question.
This comes right back to what ML said.
Joh_14:15 If ye love me, keep my commandments.
Joh_14:23 Jesus answered and said unto him, If a man love me, he will keep my words: and my Father will love him, and we will come unto him, and make our abode with him.
Obeying the Lord is loving the Lord. The commandments are spiritual with very high (heavenly?) standards of living it seems.
Jesus was "in heaven" while He was physically on the earth.
Joh 3:13 No one has ascended into heaven except the One who descended from heaven--the Son of Man.
God's Elect can be "in heaven" while on earth just like Jesus was.
1Jn 4:17 Herein is our love made perfect, that we may have boldness in the day of judgment:
because as he is, so are we in this world. 1Pe 1:15 But as he which hath called you is holy, so be ye holy in all manner of conversation [conduct];
1Pe 1:16 Because it is written, Be ye holy; for I am holy.
I feel like I could go on and on, but maybe it's easier to just say that it's all one about The One.
Do we not bow our knee in honor to God as He gets us to see and believe that "all is of God"? I'm sure there is a lot more to it, but I like to keep it simple