Isaiah 40:28-31 ESV

28 Have you not known? Have you not heard? The LORD is 1the everlasting God, the Creator of the ends of the earth. He does not faint or grow weary; 2his understanding is unsearchable.

References for Isaiah 40:28

29 He gives power to the faint, and to him who has no might he increases strength.
30 Even youths shall faint and be weary, and young men shall fall exhausted;
31 but 3they who wait for the LORD shall renew their strength; they shall mount up with wings 4like eagles; they shall run and not be weary; they shall walk and not faint.

References for Isaiah 40:31