But 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; and they shall walk, and not faint.
All Commentaries on Isaiah 40:31 Go To Isaiah 40
John of the Cross
AD 1591
The soul runs swiftly to God and touches Him again and again; and it runs without fainting by reason of its hope. For here the love that has made it strong makes it to fly swiftly. Of this the prophet Isaiah speaks thus: ’ The saints that hope in God shall renew their strength;'