28 Haven't you known? Haven't you heard? The everlasting God, Yahweh, the Creator of the ends of the earth, does not faint, neither is weary; there is no searching of his understanding.
29 He gives power to the faint; and to him who has no might he increases strength.
30 Even the youths will faint and be weary, and the young men will completely fall:
31 but those who wait for Yahweh will renew their strength; they will mount up with wings as eagles; they will run, and not be weary; they will walk, and not faint.