If the dynamic concept of the Kingdom is correct, it is never to be identified with the church. The Kingdom is primarily the dynamic reign or kingly rule of God, and derivatively, the sphere in which the rule is experienced. In biblical idiom, the Kingdom is not identified with its subjects. They are people of God’s rule who enter it, live under it, and are governed by it. The church is the community of the Kingdom but never the Kingdom itself. Jesus’ disciples belong to Kingdom as the Kingdom belongs to them; but they are not the Kingdom. The Kingdom is the rule of God; the church is a society of men.
In summary, while there is an inseparable relationship between the Kingdom and the church, they are not to be identified. The Kingdom takes its point of departure from God, the church from men. The Kingdom is God’s reign and the realm in which the blessings of his reign are experienced; the church is the fellowship of those who have experienced God’s reign and entered into the enjoyment of its blessings. The Kingdom creates the church, works through the church, and is proclaimed in the world by the church. There can be no Kingdom without a church – those who have acknowledged God’s rule – and there can be no church without God’s Kingdom; but they remain two distinguishable concepts: the rule of God and the fellowship of men. – George Eldon Ladd