Once more, one who lives in the spirit of prayer will spend much time in retired and intimate communion with God. It is by such a deliberate engagement of prayer that the fresh springs of devotion which flow through the day are fed. For, although communion with God is the life-energy of the renewed nature, our souls "cleave to the dust" and devotion tends to grow formal- it becomes emptied of its spiritual content, and exhausts itself in outward acts. The Master reminds us of this grave peril, and informs us that the true defense against insincerity in our approach to God lies in the diligent exercise of private prayer.