So often we pray briefly and without persistence, manifesting to God the unimportance of the request. Continual asking is important and Biblical. Effectual is from a Greek word meaning to be active, efficient, or be mighty in. Fervent is from a Greek word meaning heat, zeal, and ardor. Availeth is from a Greek word meaning forceful, can do, of strength, and power.
Prayer is one of our highest privileges, and one of the most effective forces in our lives.