When Jesus was on Earth, He was the physical embodiment of the Kingdom of God. He was walking, talking, breathing interactive life with God. A person’s physical proximity to Jesus’ body was their physical proximity to the Kingdom of God. But Jesus did not intend for the Kingdom to be limited to His physical presence on Earth. Jesus came to make interactive life with God available to people from every nation. His goal was to fill all of Creation with His presence. In order for this to happen, Jesus needed to return to His Father. For when He did the Holy Spirit could descend upon His followers, and fill them with His presence. And as His followers spread to the ends of the Earth, the Kingdom would go with them.