“Prayer is a principal branch of religious worship, which we are moved to by the very light of nature, and obliged to by some of its fundamental laws. Pythagoras’ golden verses begin with this precept, Whatever men made a God of, they prayed to, Deliver me, for thou art my God, Isa. xliv. 17. Nay, whatever they prayed to, they made a God of –Deos qui rogat ille facit. It is a piece of respect and homage so exactly consonant to the natural ideas which all men have of God, that it is certain those that live without prayer, live without God in the world.
Prayer is the solemn and religious offering up of devout acknowledgements and desires to God, or a sincere representation of holy affections, with a design to give unto God the glory due unto his Name thereby, and to obtain from him promised favours, and both through the Mediator.” (Matthew Henry (1162-1714) “A Method for Prayer”)