“Those who wait on the Lord shall renew their strength; they shall mount up with wings like eagles; they shall run and not be weary; they shall walk and not faint.”  Isaiah 40:31

To wait upon God is to be silent that He may speak, expecting all things from Him, and girded for instant unquestioning obedience to the slightest movement of His will.  That is waiting upon God.  All the spiritual senses alive, alert, expectant; separated unto Him, His servant and soldier, waiting.  It is not the waiting of an idler, it is not the waiting of a dreamer.  It is the quiet waiting of one who is girt and ready, one who looks upon life as a battlefield and a sphere for service, who has one Master and but one, to whom he looks for everything, from whom alone he expects anything.  This is waiting upon God according to the Scriptures.

                                                                                                                             - I. Scofield

True prayer is much more than uttering words before God.  It is bringing all the faculties of the mind and all the emotions of the heart into “attention” before God, as a regiment before a general.