The entire concept of prayer, therefore, is that one needs God, depends on Him, and accepts that one can not endure by oneself, except through God. It is for this reason that one prays to God for all ones' needs. When a person depends on God, he is also drawn close to Him. For when a person depends on another, he is drawn close and given over to him. Prayer is therefore a complete service to God.
Perfect prayer is a service that includes the soul.
The human power of speech is called 'soul'. Speech is the main expression of the human soul, since this is the primary advantage that man has over beasts. Each word that one utters represents both the power and a very portion of one's soul. It is there that all desire and thought is embedded, existing in the mystery of the Infinite. Meditate on this in every prayer, each and every day.