Prayer has everything to do with moulding the soul into the
image of God, and has everything to do with enhancing and
enlarging the measure of Divine grace. It has everything to do
with enriching, broadening and maturing the soul's experience
of God. That man cannot possibly be called a Christian, who
does not pray.- E. M. Bounds (1835-1913), The Necessity of Prayer [1907], Lulu, 2007, p. 26

Prayer pursues joy in fellowship with Jesus and in the power to share His life with others. And prayer pursues God’s glory by treating Him as the inexhaustible reservoir of hope and help. In prayer we admit our poverty and God’s prosperity, our bankruptcy and His bounty, our misery and His mercy. Therefore, prayer highly exalts and glorifies God precisely by pursuing everything we long for in Him and not in ourselves. - John Piper,Desiring God, 1996, p. 156,