Isaiah 40:27-31

²⁷Why do you say, O Jacob,
And speak, O Israel:
“My way is hidden from the Lord,
And my just claim is passed over by my God”?
²⁸ Have you not known?
Have you not heard?
The everlasting God, the Lord,
The Creator of the ends of the earth,
Neither faints nor is weary.
His understanding is unsearchable.
²⁹ He gives power to the weak,
And to those who have no might He increases strength.
³⁰ Even the youths shall faint and be weary,
And the young men shall utterly fall,
³¹ But those who wait on the Lord
Shall renew their strength;
They shall mount up with wings like eagles,
They shall run and not be weary,
They shall walk and not faint.