Is your theology wrong?
Many pastors today justify not witnessing to Jewish people by stating that they are not called to any particular ethnic group, or that they are not called to that particular ethnic group.
If this is you, then your theology is wrong.
From God's perspective there is no basis for such a theology!
The opposite is actually true:
Romans chapters 9 through 11 are the apostle Paul's expression of passion for Jewish people to know Jesus. In chapter 11, verse 11 he makes it perfectly clear.
"So I ask, did they stumble in order that they might fall? By no means! Rather through their trespass salvation has come to the Gentiles, so as to make Israel jealous."
He has witnessed to Gentiles (all ethnic groups other than Jews), to make Jewish people Jealous. Jealous of what? Jealous that all the other ethnic groups are worshiping the God of the Jews and honoring the Jewish Messiah, when they are not doing so.
In other words, gentle Christians are supposed to do Jewish evangelism regardless of their ethnicity.
In yet other words, you have no choice. YOU ARE IN FACT called and raised up to witness to Jews.
You can deny this fact all you want, but it does not change the facts as Paul expressed them in Romans 9-11.
So, how are you and your church fulfilling your call to make Jews Jealous for what you have received through Jesus?