There is so much lack of detail and so many gaps in so many stories in the New Testament we can't know everything Jesus did. John even said so in his Gospel John 21:25 "24 This is the disciple who testifies to these things and who wrote them down. We know that his testimony is true. 25 Jesus did many other things as well. If every one of them were written down, I suppose that even the whole world would not have room for the books that would be written."
So to know everything Jesus did or did not do is not for us to know. Maybe he did and they didn't believe it was him. Maybe he thought if he appeared to them they would take even worse vengeance or punishment against heretic Jews who followed him or try harder to wipe out Christian groups as they formed. I'll put it on my list of questions that I hope to take to Heaven with me.
There is always the question of why the Hebrew Exodus is not recorded in any Egyptian ancient histories. Cecile B DeMille's "The Ten Commandments" explained it that the Pharoah was so angry when he learned that his successor "Moses" was in fact Hebrew and banished him, he ordered the name "Moses" to be stricken from everything in Egypt as if it had never existed. That would make sense that a mighty leader would not want it recorded that he had been duped or that Hebrew slaves had gotten the best of him.
So would likely be the case of a high Roman official or Jewish leaders who feared losing control/influence over the rank and file Jews.
Who knows?
