Throughout the Old Testament we see God choosing what is weak and humble to represent him (the stammering Moses, the infant Samuel, Saul from an insignificant family, David confronting Goliath, etc). Paul tells us that God chooses the weak things of the world to confound the mighty. Here, however, we have a striking contradiction. In Constantine God is supposedly choosing an Augustus, a triumphant military leader. This vision and this miracle are totally impossible. But they are not impossible in the context of Christianity that is already off the rails, that thinks of God as the one who directs history and is the motive power in politics.

p. 123 - The Subversion of Christianity (1984)