When Jesus teaches His disciples how to pray, He reminds them that God is their Father. Then Jesus continues to teach that that God is not just their Father but He is also their King. Understanding this, if the disciples are to learn how to live as part of His Kingdom, they need to submit to Him as their King. “Your Kingdom come, your will be done, on earth as is it in heaven” (Matthew 6:10). We might ask, “Your kingdom come?” I thought the kingdom was already here! Didn’t the gospel writer affirm that Jesus came to preach the gospel of the Kingdom of God? (Mark 1:14-15). Didn’t Jesus say, “The Kingdom of God is within you?” (Luke 17:20-21). The answer is “Yes!” The kingdom is here but not yet fully here.
There is a sense in which kingdom living has started but the fullness of the kingdom will not be experienced until Christ’s Second Coming. “Already/Not-Yet” is how scholars refer to this concept of partial-fulfillment. Jesus is King now and we must submit to Him now, but that does not mean that He is physically reigning on the Earth. The full fulfillment of Jesus’ kingship will come at His second coming. Until that day, the job of the Christian is to serve Jesus as King with prayer and faith until the King Himself returns (Luke 19:11-27). On that day, He will reign forever and every knee shall bow and every tongue shall confess that Jesus Christ IS Lord! (Philippians 2:10-11). When you pray, call Him “King.”