The kingdom of God, is the birth of his (God) son Jesus Christ the begenning of the Kingdom of God on earth.

The teaching and life of Jesus has been proclaimed to other cities and throught the world.

Each time Jesus spoke to the people he stated "The Kingdom of God has come to you" Luke 11:20

"The Kingdom of God has come near to you" Luke 10 8-9

"Repent for the Kingdom of heaven has come near" Matthew 1:1

The people did not understand that the kingdom was Jesus. God the Father, Jesus the son, is called the prience of peace. Therefore  if Jesus is the prience, God is King and Jesus is God representative.