Jesus Christ preached a Reign or Kingdom,
the Kingdom of God (or of heaven).
Matthew 4: 17
From that time on, Jesus began to preach and say,
"Repent, for the kingdom of heaven is at hand."
A "Kingdom" is that society of people governed by a king.
The term "Kingdom (or Reign) of God" occurs 50 times
in the three synoptic Gospels (14 times in Mark, 32 times
in Luke, and 4 times in Matthew).
The term "kingdom of the heaven" occurs 32 times,
mostly in Matthew for designating that kingdom
beyond the earth which God decreed to build through