The Catholics say that the Christians were “persecuted because they were Christians.” They were, in fact, persecuted because they observed and taught the same religious calendar as did the Jews. The Jews had often rebelled against Roman pagan rule. Their drive for freedom from Roman political rule is a large measure of why Jesus was crucified. The Jews were looking for a political deliverer, not a Messiah who would save them from their sins. They did not realize that had they accepted Jesus as Messiah, he, knowing that they loved Him, would have done as He did when He delivered Israel from Egyptian bondage.
Because the Jews did not trust God, or His Son, they not only accepted a murderer as a free man so that the Romans could crucify Jesus, they demanded that the Christian Jews rebell against Roman rule. Though the Christian Jews did not rebell against the Romans, the non-Christian Jews did. The Roman pagans knew little of either branch of Judaism. So, because of the outward appearance of nearly complete religious similarity between Christian Jews and non-Christian Jews, the Romans persecuted both.The non-Christian Jews rebelled at around 132 AD, until about 135 AD.
The Christians began, at that time to separate themselves, doctrinally where religious days and ways were concerned, from non-Christian Jews. Then, they began looking to ways to incorporate the surrounding pagan religions and people into their own brand of Christianity. The non-Christian Jews kept on observing the God-given religious days and ways as God gave them at Mount Sinai, to Moses. Then the Christians began to have religious councils so they could formalize what they were, in some cases, already observing.
Essentially, the above is how we got where we are today. The point here is that the non-Christian Jews need to learn of their own Messiah. We need to go back to the religious calendar that the Messiah gave at Mount Sinai. That is, the Jews need Jesus. We need the religious calendar of the Jews. God said of Himself that He is a jealous God, and does not change.