The kingdom of God is where man is in a state of grace and all things move in divine order. Human needs are met by God’s abundance, human limitations are dissolved by God’s power, human rashness is tamed by God’s discipline – all this is part of the kingdom of God. Contact with God is the one thing that gives sense and satisfaction to our lives and God is always ready and waiting….The kingdom of God is grace, which is why we pray for it; but the grace of God so often stands at the door and knocks without finding anyone to open.

– Father Alfred Delp, S.J.