E. M. Bounds 
Reality of Prayer 

The word "prayer" expresses the largest and most comprehensive approach unto God. It gives prominence to the element of devotion. It is communion and intercourse with God. It is enjoyment of God. It is access to God. "Supplication" is a more restricted and more intense form of prayer, accompanied by a sense of personal need, limited to the seeking in an urgent manner of a supply for pressing need. "Supplication" is the very soul of prayer in the way of pleading for some one thing, greatly needed, and the need intensely felt.