Isaiah
Chapters 40:28-31
Revised Version 1885
28Hast thou not known? hast thou not heard? the everlasting God, the Lord, 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 upon the Lord 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.