Presently Jesus’ Kingdom IS INVISIBLE...
Jesus’ present Kingdom IS WITHIN “SOME” men.
At least you acknowledge that His kingdom currently exists. That's progress.
In the future (personally I believe the NEAR future), Jesus’ Kingdom WILL BE visible (manifested <—-> ie ABLE to BE SEEN by the eyes of Human men)...
ON Earth...
Yes, but He will be delivering His kingdom to the Father when He comes at the end of the age, which is what is taught in 1 Corinthians 15:22-24 and Matthew 13:40-43. So, at that point the visible kingdom will be what Jesus called "the kingdom of their Father" in Matthew 13:43.
.Boundaries of the LAND Promised to Abraham and his Faithful Descendent's
Do you think that is what Abraham and his faithful descendants are looking forward to? If so, you should read Hebrews 11 so that you can understand that they are looking forward to something better, a heavenly country and a heavenly city whose builder and maker is God.
, it’s Throne, king David’s everlasting throne in Jerusalem, Where King Jesus shall rule the mortal kingdoms of the world.
Jesus has already been placed on David's throne. According to Peter, Jesus was raised up to David's throne by way of being raised up from the dead.
Acts 2:29 “Fellow Israelites, I can tell you confidently that
the patriarch David died and was buried, and his tomb is here to this day. 30 But
he was a prophet and knew that God had promised him on oath that he would place one of his descendants on his throne. 31 Seeing what was to come, he spoke of the resurrection of the Messiah, that he was not abandoned to the realm of the dead, nor did his body see decay. 32
God has raised this Jesus to life, and we are all witnesses of it. 33
Exalted to the right hand of God, he has received from the Father the promised Holy Spirit and has poured out what you now see and hear. 34 For David did not ascend to heaven, and yet he said, “‘The Lord said to my Lord: “Sit at my right hand 35 until I make your enemies a footstool for your feet.”’ 36 “
Therefore let all Israel be assured of this: God has made this Jesus, whom you crucified, both Lord and Messiah.”
This is very clear. Peter equated the resurrection of Christ and Him being "exalted to the right hand of God" and being made "Lord and Messiah" with the fulfillment of David's prophecy of God promising him that one of his descendants would be placed on his throne.