Is. xli.4, 5: "Who hath wrought and done it, calling the generations from the beginning? I, Jehovah, THE FIRST AND LAST; I am He. The isles saw it, and feared; the ends of the earth were afraid."
Is. xliv.6: "Thus saith the Lord, the King of Israel, and his Redeemer, the Lord of hosts; I AM THE FIRST, AND I AM THE LAST; and beside me there is no God."
Is. xlviii.12: "Hearken unto me, O Jacob, and Israel, my called; I am he; I AM THE FIRST, I ALSO AM THE LAST. Mine hand hath laid the foundation of the earth, and my right hand hath spanned the heavens: when I call unto them, they stand up together."
Is it not clear, almost to certainty, that when the Lord Jesus specially reveals Himself by this title, never using it again till He claims it in the book of Revelation four  times, He means to teach us that He is come to act on behalf of Israel and in connection with that People with which this title is thus peculiarly associated?
The connection of Isaiah with Revelation in the use of this title is eloquent to all who have "ears to hear."
 Four being the number that relates specially to the earth."