“To the chief Musician, A Psalm of David, to bring to remembrance. Make haste, O God, to deliver me; make haste to help me, O LORD. to help: Heb. to my help”
Cross references: : Ps. 40:13 Which might put him in remembrance of his deliverance. He teacheth us to be earnest in prayer, though God seem to stay: for at his time he will hear us.