You can do both. I celebrate Passover and use a Talit and I am fully Orthodox! You will be surprised how much more you will understand about Orthodoxy through Jewish eyes!
The only Passover that Orthodox Christians should celebrate is of the Resurrection of the Lord. The shadow of the Law has passed away ...
Yeshua, all the Apostles and ALL of the Eastern churches celebrated Passover. It is FULLY Orthodox. In fact Pascha means Passover...not "easter"...
See how much you do not understand because you have closed eyes and ears! Passover is when Yeshua gave us the command to do this in remembrance of Him. The Feast of First fruits is when Yeshua rose from the dead 3 days later when our High Priest Yeshua waved the wave sheaf offering for His Father to accept!
Not recognizing the separation of Christianity from Judaism is to not recognize the difference between being a Christian and being a Jew.
You are not an Orthodox Jew or an Orthodox Christian. There is no six of one and half dozen of the other.
Sorry. I really doubt St. Paul went about in a European Polish or Hungarian Hasidic hat.
I AM an Orthodox Christian and you have NO authority to claim otherwise! Do you consider Yeshua, all His Apostles as well as all of the early Eastern Churches Orthodox? If yes, then I am too. If no, then it is YOU that are not Orthodox!
Christianity is not Judaism. Judaism is not Christianity. If you were baptized Orthodox but you are now in a Christian "messianic Jewish" sect, that is all it is.
St. Paul did not wear a shtreimel. They are 1700s-era European hats. Little late, you see.
Go into any actual Orthodox Jewish synagogue and try this again. See what they say.
You don't even pass the laugh test.
Oh, by the way, are you Alfred Persson? He is the only one who used phrases such as "pre-100 A.D. Orthodox" when he was here. And he was making it up, too. There is no such thing. The Orthodox Church was not founded in 100 A.D. It was founded by Christ on Pentecost.
You can't make yourself Orthodox Christian just by saying so. The Orthodox Church is a recognized physical fact. It is not something you meld by sticking the word "orthodox," meaning traditional or formal, to the word "Christian," meaning "whatever you want."