What is hidden before God is visible before the world, and what is hidden before the world is visible before God. “Which are the virtues (i. e. powers of being) of God? Infirmity, passion, cross, persecution: these are the weapons of God.” “The power of man is emptied by the cross, but in the weakness of the cross the Divine power is present.” And from this he says, about the state of man: “Being man means non-being, becoming being. It means being in privation, in possibility, in action. It means always being in sin, in justification, in justice. It means always being a sinner, a penitent, a just one.” Now this is paradoxical and it makes clear what Luther means with God. God can be seen only through the law of contrast.

This is confirmed by his idea of God when he goes to ontological considerations, as he does in his writings on the sacrament. He denies everything which can make God finite, or a being besides others.