There is one sin that is worse than all others. It is the worst because it is insidious and imperceptibly deceptive. It is always at the root of all other sins. It was the original sin. In C.S. Lewis’s classic book, Mere Christianity, it warranted an entire chapter (“The Great Sin”) and Lewis claims that it is the greatest threat to any person – including the Christian – and their standing before God. Thus, to be truly spiritual, Spirit-led, Spirit-empowered, and spiritual, demands that the man or woman of God be on guard against what Lewis called “spiritual cancer” — pride. To have any chance of guarding against the spread of this deadly spiritual and character blighting ‘cancer’ requires that we adopt a decreasing vision of ‘greatness’.