The opening line to that prayer has been a point for me to ponder frequently. We say "Our Father in Heaven." This one phrase strikes me every time. We call God Father. We have a relationship with him that is close; he is "Our Father." He is not far off and distant, but "near to all who call on him" (Ps 145:18). The modern conceptions of God often place him far off or inaccessible, but what this simple prayer tells us is that he is nearby. He is "our Father."