answer: simple - there are 23 actual prophecies about the Jewish Messiah. He fulfilled only 1 - he was Jewish. The Jewish Messiah will fulfill ALL of them in one lifetime. What is claimed about Jesus proved/proves that he was NOT the Jewish Messiah. A divine savior that takes on the sins of others and was a sacrifice is abhorrent beliefs in Judaism and what the Jewish Messiah will NOT be or do.
divine birth/divinity - (the Jewish Messiah will be human – G-d cannot become human – Deuteronomy 6:4, Isaiah 44:6, Hosea 11:9, Ezekiel 28:2, Numbers 23:19) - strike
performing miracles - (JM won't perform miracles) - strike
taking on the sins of others - (no one can take on the sins of others – Deuteronomy 24:16, Exodus 32:30-35, Ezekiel 18:1-4; 20-24; 26-27) - strike
breaking Sabbath - strike (JM will be observant) - strike
sacrificed/rising from the dead - (G-d rejects human sacrifice and blood sacrifice is NOT an absolute requirement – Deuteronomy 12:30-31, Jeremiah 19:4-6, Psalm 106:37-38, Ezekiel 16:20, Leviticus 5:11-13, Jonah 3:10, Leviticus 17, Leviticus 5:11-13, Numbers 16:47, Numbers 31:50, Isaiah 6:6-7, Jeremiah 7:22-23, Psalm 51:16-17) - strike
prophecies unfilled - (JM will accomplish them in one life time) - strike
The Messiah cannot trace his lineage through Jehoiakim, Jeconiah, or Shealtiel, because this royal line was cursed (I Chronicles 3:15-17; Jeremiah 22:18,30). But according to both Matthew 1:11-12 and Luke 3:27, Jesus was a descendant of Shealtiel - strike
being worshiped - Jews worship G-d and only G-d – strike and OUT
* The Sanhedrin will be re-established (Isaiah 1:26)
* Once he is King, leaders of other nations will look to him for guidance. (Isaiah 2:4)
* The whole world will worship the One God of Israel (Isaiah 2:17)
* He will be descended from King David (Isaiah 11:1) via King Solomon (1 Chron. 22:8-10)
* The Moshiach will be a man of this world, an observant Jew with "fear of God" (Isaiah 11:2)
*****In other words - this must all be accomplished in a human lifetime*****
* Evil and tyranny will not be able to stand before his leadership (Isaiah 11:4)
* Knowledge of God will fill the world (Isaiah 11:9)
* He will include and attract people from all cultures and nations (Isaiah 11:10)
* All Israelites will be returned to their homeland (Isaiah 11:12)
* Death will be swallowed up forever (Isaiah 25:8)
* There will be no more hunger or illness, and death will cease (Isaiah 25:8)
* All of the dead will rise again (Isaiah 26:19)
* The Jewish people will experience eternal joy and gladness (Isaiah 51:11)
* He will be a messenger of peace (Isaiah 52:7)
* Nations will end up recognizing the wrongs they did to Israel (Isaiah 52:13-53:5)
* The peoples of the world will turn to the Jews for spiritual guidance (Zechariah 8:23)
* The ruined cities of Israel will be restored (Ezekiel 16:55)
* Weapons of war will be destroyed (Ezekiel 39:9)
* The Temple will be rebuilt (Ezekiel 40) resuming many of the suspended mitzvot
* He will then perfect the entire world to serve God together (Zephaniah 3:9)
* Jews will know the Torah without Study (Jeremiah 31:33)
* He will give you all the desires of your heart (Psalms 37:4)
* He will take the barren land and make it abundant and fruitful (Isaiah 51:3, Amos 9:13-15, Ezekiel 36:29-30, Isaiah 11:6-9).
Thanks to Mark S and Plushy Bear