Jacob and Israel: i.e. the natural and spiritual seed. Some codices, with two early printed editions, read "Jacob my servant".
the first. the last. Compare Isaiah 41:4; Isaiah 44:6.
Related Commentaries of Isaiah 48:12
Isaiah 48:12
12 Hearken unto me, O Jacob and Israel, my called; I am he; I am the first, I also am the last.