We might think of the cross along the lines of a two-way mirror in which you are able to look through your own reflection and see what is taking place on the other side of the mirror—but only if the other side of the mirror is lit up. Otherwise you only see your own reflection. So too, the faith of believers lightens up what is going on behind the scenes of the crucifixion. It thus allows them to see through the ugly sin-mirroring surface of the cross to behold God
