E. M. Bounds
Prayer has to do with the entire man. Prayer takes in man in his whole being, mind, soul and body. It takes whole man to pray, and prayer affects the entire man in its gracious results... The whole man must be given to God in praying. ...God wants, and must have, all that there is in man in answering his prayers. He must have whole-hearted men through whom to work out His purpose and plans concerning men. God must have in their entirely. No double-minded man need apply. No vacillating man can be used. No man with a divided allegiance to God, and the world, and self, can do the praying that is needed. Holiness is wholeness, and so God wants holy men, whole-hearted and true, for His service and for the work of praying... These are the sort of men God wants for leaders of the hosts of Israel, and these are the kind out of which the praying class is formed. Book jacket.