Jesus clearly broke down the barriers between Gentile and Jew. The Gentiles are grafted in to God's family meaning, as Paul wrote
Romans 3:22 There is no difference between Jew and Gentile,
Romans 10:12 For there is no difference between Jew and Gentile—the same Lord is Lord of all and richly blesses all who call on him,
Or Galatians 3:28 There is neither Jew nor Gentile, neither slave nor free, nor is there male and female, for you are all one in Christ Jesus.
OR Col 3:11 Here there is no Gentile or Jew, circumcised or uncircumcised, barbarian, Scythian, slave or free, but Christ is all, and is in all.
Or Matthew 21
38 “But when the tenants saw the son, they said to each other, ‘This is the heir. Come, let’s kill him and take his inheritance.’ 39 So they took him and threw him out of the vineyard and killed him.Jesus expanded God's family to all - no more Jew or Greek40 “Therefore, when the owner of the vineyard comes, what will he do to those tenants?”
41 “He will bring those wretches to a wretched end,” they replied, “and he will rent the vineyard to other tenants, who will give him his share of the crop at harvest time.”
The Jews who do not accept Jesus as Messiah are the same as gentiles who do not accept Jesus. During the tribulation, the Jews will realize that Jesus is, indeed, the Messiah.