28 Have you not known? Have you not heard, that the eternal God, Jehovah, the Creator of the ends of the earth, does not grow faint nor weary? His understanding is unsearchable.

29 He gives power to the faint; and to him with no strength, He increases might.

30 Even the young shall faint and be weary, and the young men shall be feeble and stumble;

31 but those who wait upon 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.