And the glory of the LORD shall be revealed, and all flesh shall see it together: for the mouth of the LORD has spoken it.
All Commentaries on Isaiah 40:5 Go To Isaiah 40
Gregory The Dialogist
AD 604
All flesh, that is, every man can not see the salvation of God in Christ in this life. The Prophet therefore stretches his eye beyond to the last day of judgment, when all men both the elect and the reprobate shall equally see Him.