As a Jewish believer in Messiah (Christ) Yeshua (Jesus) as both Savior and the Son of God, I certainly agree with your conclusion. Whereas born-again Christians recognize that Messiah has already come and is coming again, unsaved Jews are still awaiting the Messiah.

Among other reasons that Jews have not yet accepted Jesus is that the 1st century Jews were looking for a conquering king Messiah and not a suffering servant. In fact, some Orthodox Jews today believe that there will be two Messiahs and do not realize that Jesus has fulfilled the role of the Lamb of God (the suffering servant of Isaiah 53), but will return as King Messiah to rule and reign over the nations.

The second reason is: For I, brethren, would not have you be ignorant of this mystery, lest ye should be wise in your own conceits: that blindness in part has happened to Israel until the fullness of the Gentiles be come in. Romans 11:25

Again I ask: Did they stumble so as to fall beyond recovery? Not at all! Rather, because of their transgression, salvation has come to the Gentiles to make Israel envious. Romans 11:11

God is sovereign and merciful and it is His plan that Israel is blinded in part (not recognizing Yeshua as Messiah), so that salvation will come to the nations.

I am very new to steemit and I believe I have some good insights to offer the community. Here is one of my recent posts: https://steemit.com/christianity/@lastdays/keys-for-unlocking-the-treasure-of-divine-understanding

Shalom. Steven