“Since you are Jewish; if you had questions regarding Christianity, would you ask your rabbi about it?”
My particular rabbi - no, he’s not an expert in Christianity and its scriptures and doctrines, but he certainly knows ours very well. **HOWEVER** there are a few rabbis that do have such knowledge, and Tovia Singer is one of them. But don’t believe me - go and watch several of his videos yourself to see FOR YOURSELF if he is knowledgeable or not about your scriptures.