Confusion throughout.
The kingdom is not of this world...He said so.
Flesh cannot inherit the kingdom.
You might consider that most of what you read in the bible was written by people.....who don't want to die....want this life, forever.....
can't get it through their heads....God is spirit.
The kingdom is not of this world.
Following the Carpenter was granted by the Carpenter.
You cannot undo this.
Absolutely, God's kingdom is Not of this [earthly] world.
Absolutely Flesh [physical] can Not inherit the heavenly realm. [1st Cor 15v50]
God is spirit and God resurrected Jesus back to the spirit realm in a spirit body.
[Those that reign with Jesus will also have spirit bodies. -Rev 20v6; 5vs9,10]
No Christian wants to undo following the 'Carpenter' aka Christ Jesus.
Jesus even stated his followers were Not part of the world. [Jn 17vs14-16]
Not part of the 'world of wickedness' or the wicked world.
So, the heavenly kingdom is Not part of this world's badness.
But that does not mean the heavenly kingdom will not affect earth's affairs.
The prophet Daniel likened God's kingdom to a stone. [Dan 2 vs34,34,45]
Please notice in verse 35 that God's kingdom [stone] grows or becomes a great mountain.
Not a literal mountain filling the whole earth, but as verse 44 says God's kingdom will replace [fill the place] of all earthly governmental kingdoms.
Jesus, as crowned king of God's kingdom of the heavens, will usher in Peace on Earth toward men of goodwill.
In other words, only Jesus can and will being peace to the world of righteous mankind.