Isaiah 40:27-31

27Why sayest thou, O Jacob, and speakest, O Israel, My way is hid from Jehovah, and the justice due to me is passed away from my God? 28Hast thou not known? hast thou not heard? The everlasting God, Jehovah, the Creator of the ends of the earth, fainteth not, neither is weary; there is no searching of his understanding. 29He giveth power to the faint; and to him that hath no might he increaseth strength. 30Even the youths shall faint and be weary, and the young men shall utterly fall: 31but they that wait for Jehovah shall renew their strength; they shall mount up with wings as eagles; they shall run, and not be weary; they shall walk, and not faint.