But not in the book of Isaiah. Isaiah identifies only Israel as a servant, so that every time he mentions the servant, you can be sure he is referring to Israel.
Israel
No, respectfully, Isaiah identifies the SERVANT Rebbe Melekh HaMoshiach as THE SERVANT.
The servant, we're told in scripture is too large to be just for Israel so He is for the Gentiles. We KNOW how Gentiles sometimes (often!) treat Israel. Now name a Jew who is worshipped worldwide by Gentiles as teacher/king/messiah!
Again, you used general terms "Isaiah says this, not this," and either of us can say "Isaiah said The Phillies will win the World Series" and that means less to me that what HA SHEM said:
Israel or a person died for sin then rose, was rejected by Israel, was a man of sorrow, buried with the rich, with sinners in His death, grew up before Him tender, etc., etc.
Have you prayed through verse 1? Israel was disbelieved by ISRAEL as Isaiah had preached Him? REALLY?! We both KNOW JESUS was mostly disbelieved by ISRAEL.