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
Jerome
AD 420
We have said that the old age of eagles is revived by a change of their wings and that they alone who see the brilliance of the sun and the radiance of its splendor are able to gaze with gleaming eyes; and they test their young ones to see whether they are of noble birth by this same test. In the same way the saints are made young again as they put on their immortal bodies so that they no longer feel the toil of mortals but are taken up into the clouds before the face of Christ, and in no way (following the Septuagint) do they hunger, since they have the Lord present to them as food.