New American Standard Bible
28 (A)Do you not know? Have you not heard?
The (B)Everlasting God, the Lord, the Creator of the ends of the earth
Does not become weary or tired.
His understanding is (C)unsearchable.
29 He gives strength to the (D)weary,
And to the one who lacks might He (E)increases power.
30 Though (F)youths grow weary and tired,
And vigorous (G)young men stumble badly,
31 Yet those who [a]wait for the Lord
Will (H)gain new strength;
They will [b](I)mount up with wings like eagles,
They will run and not get tired,
They will walk and not become weary.