- everlasting blissful happiness and peace on earth
- heaven after death / afterlife
- a metaphorical way to describe that righteousness would be made on earth by the power of the holy spirit, and that Jesus' parables give a sample and foreshadow of what the real Kingdom of God on earth will be like; in order to achieve the Kingdom of God, one must obey his commandments as well as continue the covenants given to Israel before Jesus.
The Kingdom of God or Heaven literally means the Realm where God dwells.
The Kingdom of God may be divided into two types based on it's establishment.
1. At the First coming of Jesus Christ
When Jesus came to earth as a humble man to suffer and die for us, He's goal was to bring down the Kingdom of God, which was also His role as the promised Messiah. But at His first coming, the Kingdom of God was not to be established physically on earth, which was the expectation of the Jews. Jesus came to establish the Kingdom of God in the hearts of men. Jesus was preparing the people for the coming kingdom, which was to be established soon after He finished His work on the cross. John the Baptist was proclaiming that the Kingdom of God was near.
Jesus started explaining to the people what the Kingdom of God is. He used metaphors like the sower, mustard seed, hidden treasure, weeds, yeast and fishing net (see Matthew 13). But until it was established from the day of Pentecost, which was the beginning of the Church era, it was not fully understood. Therefore, this Church era is the first establishment of Kingdom of God and it's dominion is in the hearts of mankind.
Here, Jesus said that the Kingdom of God can start from a single person, which can yield many other believers. Peter was the first man to preach the Gospel on the Day of Pentecost and 3000 people were baptized that day. And the apostles went on to preach everywhere and the number of Christians kept on growing and growing.
2. At the Second coming of Jesus Christ
Jesus will come again with all His glory and power to establish His kingdom physically on earth forever. This present world is in the hands of Satan but when Jesus comes, Satan will be defeated and the eternal physical Kingdom of God will be established on earth forever and ever. Amen.
One is in the Kingdom of God when, as Jesus said, "I and the Father will make our abode[tabernacle] within you."
He said "keep my words."
Which I understand to mean " don't change from what I have taught you to do, and don't mislead people about what I have taught."
The difficulty for people who try to understand Jesus's training by the reading of the the NT, is that so little of what he taught was released to the public. Of the 2,000 + hours of training He gave to the disciples, we got less than 2 hours of His words in the NT. In the Gospel of Mark who, it was said by the Church historians, recorded everything that Peter told him about Jesus "leaving nothing out and adding nothing," we find only 18 minutes of Jesus's sayings were released to the public by the Church in the NT writings. Obviously Mark knew a lot more than that. John said that there weren't enough books in the world to contain what Jesus showed them. So you are at a severe disadvantage if all you know about His training is taken from the English NT. There are some 27 miles of shelving in the Vatican Library about what Jesus taught. There are enough books in English now, for anyone to delve deeper. I have dozens of books from the 2nd through 5th. cents. written by His disciples who explain what He taught.
Below are listed some of the parables about the Kingdom of God and Heaven. It is clear in all of these that the Master was referring to the work of the Church on the earth bringing people into relationships with God through Christ by the power of the Holy Spirit. This is especially clear in Luke 17 and Mark 9. When teaching on the Kingdom of Heaven Jesus always preached it as something which would happen later rather than during his ministry on the earth. The Lord will return one day and physically establish the Kingdom of Heaven on the earth until then the Kingdom of Heaven exists in our hearts and is expressed through our lives.