"People who know their God are before anything else people who pray, and the first point where their zeal and energy for God's glory come to expression is in their prayers....Yet the invariable fruit of true knowledge of God is energy to pray for God's cause - energy indeed which can only find an outlet and a relief of inner tension when channeled into such prayer - and the more knowledge, the more energy! By this we may test ourselves. Perhaps we are not in a position to make public gestures against ungodliness and apostasy. Perhaps we are old, or ill, or otherwise limited by our physical situation. But we can all pray about the ungodliness and apostasy which we see in everyday life all around us. If, however, there is in us little energy for such prayer, and little consequent practice of it, this is a sure sign that as yet we scarcely know our God." - J.I. Packer, Knowing God, 28