We read in a certain place that while we are in the body we are pilgrims away from the Lord (2 Cor. 5:6). For whatever is handed down to us of the heavenly mysteries, however much it subsists in indubitable truth, we must believe because we cannot see. For in this age, for us, to know is only to believe. Blessed are the pure in heart, for they shall see God (Matt. 5:8); He did not say 'they see,' but 'they shall see.' Wherefore he who has faith in present things will himself receive contemplation in the things to come.