But, then there are also verse like:
1 John 2:22-23 - "Who is a liar but he that denieth that Jesus is the Christ? He is antichrist, that denieth the Father and the Son. Whosoever denieth the Son, the same hath not the Father: but he that acknowledgeth the Son hath the Father also."
You really can't truly acknowledge One without the Other because they are One. While the children of Israel are extended special grace, they like everyone else has to believe on the Son of God.
So, Jews who don't believe are destined for the same fate that other unbelievers are. Remember, Jesus was the Messiah of the Jews... in other words, they were the ones who He came for, but yet the ones who denied His truth. Until a Jewish person accepts their Messiah, they are lost like a sinner. The only difference is that their NATION, their PEOPLE operate under the Abrahamaic blessing... But, this doesn't alleviate their need for their Messiah. If that were the case, Jesus would never have had to come in the first place. REMEMBER: "...I am not sent but unto the lost sheep of the house of Israel." - Matt. 15:24