“The devil is the worst enemy of Christ and therefore of His followers. The other two foes are the world and the flesh. Just as the devil is opposed to Christ, so the world is opposed to the Father and the flesh to the Spirit. The Trinity of evil has been described as follows: the devil is the enemy against us; the world is the foe around us; and the flesh is the traitor within us.” (William MacDonald, Worlds Apart, 1993, p.15)