George Eldon Ladd
The Kingdom of God is His kingship, His rule, His authority. When this is once realized, we can go through the New Testament and find passage after passage where this meaning is evident, where the Kingdom is not a realm or a people but God’s reign. Jesus said that we must “receive the kingdom of God” as little children (Mark 10:15). What is received? The Church? Heaven? What is received is God’s rule. In order to enter the future realm of the Kingdom, one must submit himself in perfect trust to God’s rule here and now. We must also “seek first his kingdom and his righteousness” (Matt. 6: 33). What is the object of our quest? The Church? Heaven? No, we are to seek God’s righteousness—His sway, His rule, His reign in our lives.