E. M. Bounds 
The Weapon of Prayer [EPUB ebook] 

It must never be forgotten that Almighty God rules this world. He is not an absentee God. His band is ever on the throttle of human affairs. He is everywhere present in the concerns of time. “His eyes behold, his eyelids try the children of men.” He rules the world just as He rules the Church by prayer. This lesson needs to be emphasized, iterated and reiterated in the ears of men of modern times and brought to bear with cumulative force on the consciences of this generation whose eyes have no vision for the eternal things, whose ears are deaf toward God.

Nothing is more important to God than prayer in dealing with mankind. But it is likewise all-important to man to pray. Failure to pray is failure along the whole line of life. It is failure of duty, service, and spiritual progress. God must help man by prayer. He who does not pray, therefore, robs himself of God’s help and places God where He cannot help man. Man must pray to God if love for God is to exist. Faith and hope, and patience and all the strong, beautiful, vital forces of piety are withered and dead in a prayerless life. The life of the individual believer, his personal salvation, and personal Christian graces have their being, bloom and fruitage in prayer.

All this and much more can be said as to the necessity of prayer to the being, and culture of piety in the individual. But prayer has a larger sphere, a more obligated duty, a loftier inspiration. Prayer concerns God, whose purposes and plans are conditioned on prayer. His will and His glory are bound up in praying. The days of God’s splendour and renown have always been the great days of prayer. God’s great movements in this world have been conditioned on, continued and fashioned by prayer. God has put Himself in these great movements just as men have prayed. Present, prevailing, conspicuous and mastering prayer has always brought God to be present. The real and obvious test of a genuine work of God is the prevalence of the spirit of prayer. God’s mightiest forces surcharge and impregnate a movement when prayer’s mightiest forces are there.