Paul's tribute to the Thessalonians was, that their faith grew exceedingly. Faith is increased by exercise, by being put into use. It is nourished by sore trials. Faith grows by reading and meditating upon the Word of God. Most, and best of all, faith thrives in an atmosphere of prayer.
Prayer is absolutely dependent upon faith.
It has no existence apart from it, and accomplishes nothing unless it is its inseparable companion. Faith makes prayer effectual, and in a certain important sense, must precede it. This is the primary step in praying. In this regard, while faith does not bring the blessing, yet it puts prayer in a position to ask for it, and leads to another step toward realization, by aiding the petitioner to believe that God is able and willing to bless. Faith opens the way for prayer to approach God.