The Kingdom of Heaven is on earth, for those that are able to receive it. Rom.12 is a good start for understanding exactly where it is located. The details are in the "Be Attitudes" that Christ taught; focusing on the courts, and judges.
Christ had a reason for everything that He did and said. No energy or effort was wasted. He skillfully exposed OUR enemy and it's seed. He caution us to be "Mild as a dove, and wiser than the Serpent." We are to resolve disputes quickly and stay out of courts.
Mosses received the Law from the Lord[YHVH], but we refer to it as Mosses or Mosaic Law. When Mosses and the Lord talked, Mosses kept notes in a book. He was given specific directions on how and whom to pick for Judges and leaders. The matters un-resolved by the other Judges would be heard by Mosses. His seat was called Judgement, or the Seat of Mosses.
Christ exposed those sitting in Judgement as hypocrites and frauds-they practice and served a "different god."These hypocrites follow the "Traditions of Men" which voids out the Word of the Lord. These Judges practice another law, and have taken an oath in secret to another. They practice witchcraft, and idolatry.
Luke 8:17 speaks of secrets being revealed - all of them. As a follower of Christ, entering in to a world court will result in persecution. The Ten Commandments being removed quietly from many court building is a symptom of a larger problem. We must apply wisdom from above to operate physically in this world; we are in it, but not of it.