Jesus prayed, "Thy kingdom come" (Matt. 6:10). Premillennialists claim that Jesus will one day return and establish a kingdom on earth in the city of Jerusalem and then reign in His kingdom. There is a problem with this belief. It was tried before and it failed. In John 6:15, after feeding the 5,000, the people were going to make Jesus a king on earth, and Jesus knowing it, left. Why?
1. They couldn't make Him king, He was born king (Matt. 2:2; Luke 3:23,31b; Acts 2:29-30; Luke 3:33b; Gen. 49:10), and became an Immortal King of Kings (1 Tim. 6:14-16; Rev. 19:16).
2. He's not going to reign later either, but is reigning now. "Jesus came and spake unto them, saying, All power (authority) is given unto me in heaven and in earth" (Matt. 28:18). Sounds like He's reigning to me. Also read (Eph. 1:20-23; Phil. 2:9-11; 1 Peter 3:22).
3. How can He as King be reigning without a kingdom? Impossible. In the days of John and Jesus the kingdom was near (Matt. 3:2; 4:17; Mark 1:15), and even visibly came in their generation (Mark 9:1; Acts 2:3-12). "Who hath delivered us from the power of darkness, and hath (past tense) translated us into the kingdom of his dear Son" (Col. 1:13). It's because the church, which was established in Jerusalem, is the kingdom (Matt. 16:18-19; Isa. 2:2-3; Micah 4:1-2; Dan. 2:44; 7:13-14; Joel 2:28-32; Luke 24:46-49; Acts 1:2-8,12; 2:1-47).
"The law and the prophets were until John: since that time the kingdom of God is preached, and every man presseth into it" (Luke 16:16). Jesus, John and others preached a spiritual kingdom and many missed it looking for an earthly one. Many today are making the same mistake. The Lord's kingdom is not coming...it came!