The spirit of prayer, or, A discourse, wherein the nature of prayer is opened, the kindes of prayer are handled, and the right manner of praying discovered : several cases about this duty are resolved from Eph. 6. 18, "Praying always with all prayer and supplication in the spirit, and watching thereunto with all perseverance, and supplication for all saints" : unto which is added, a direction for the attaining the gift of prayer, that family-duty may not be omitted, nor secret duty discouraged, through inability of utterance and expression /