Well, you're not Jewish so I expect that kind of confusion.
As mentioned here earlier not all temple sacrifice deals with sins. There are many offerings not associated with sin.
However, the ones in Ezekiel brought up by the OP, that take place in the so called "Millennial temple" are indeed Sin offerings made for Atonement and acceptance. The question is WHY, and what sort of efficacy, if any, would they have, and if they are effective(and therefore necessary), how do they not therefore render Christ's perfect sacrifice null and void, ineffective and unnecessary?
The Jewish Messiah did not come to abolish Judaism.
However, The tribal system went extinct in the first century, and it did so precisely because the Jewish Messiah came and made the faith of Abraham universal to all people groups. In contrast with the Covenant of Moses, The Messiah's Covenant detached from race, from animal sacrifices, from the Temple, from the priestly class of Aaron, and from any earthly city--and it delivered this NEW judaism decades before the OLD judaism went extinct at AD 70. This proves that Christianity was of divine origin. They prophetically foresaw that the Old system was about to vanish (Heb 8:13) and history proves they were correct.
All the tribes and bloodlines were lost 20 centuries ago. Call that what you want, but that's the reality. Now, Christianity has an explanation for why this happened. The loss of the tribes, the priesthood of Aaron, the animal sacrifice, the Temple occurred because *all* people-groups were destined by God to be partakers in Abraham's faith. This prophecy of Gen 12:3 was fulfilled in the first century. (Be sure to note that
Galatians 3:7-14 is the biblical interpretation of
Genesis 12:3).
Modern Judaism was created long after AD 70 and has little at all in common with the religion mandated by Moses at Sinai, which the ancient Hebrews practiced from 1500 BC to AD 70. In fact, today's Talmudic Judaism is much closer to Christianity than to the religion the biblical Hebrews were required to practice. (Just read Leviticus and ask yourself, "Do any Jews today do this"?) ..and we know from scripture that there is no such thing as "Jews" that didn't follow the Torah. Such "Jews" were excommunicated from among the people of God and were considered heathen (Ex 12:14-15,19; Ex 31:14). Such a person was at that point considered a heathen
and not a child of Abraham.
To follow what Moses commanded, Jews *must* be able to be reckoned by genealogy. They can no longer identify any sons of Abraham by lineage (and that's another reason why Jesus MUST be the messiah). This is precisely because the NEW covenant made with Israel was for all people groups and was no longer attached to the priestly class of Aaron or animal sacrifices. And when the NEW covenant was made, the OLD one went extinct.
Amazing History.
The NEW covenant was made with the Church of Israel. There is no "church" outside of Israel. The Church of Israel dates back to Moses (Acts 7:38) and existed throughout the OT age.
The only true Israel today with any authorized covenant is the Nazarene sect, which grew from a band of Twelve into worldwide Judaism, What we call Christianity,
fulfilling the promise to Abraham (Gen 12:3/Gal 3:7-9/Rom 4:13-18).
Reconciliation is not the act of nullification.
The temple system is over. God wont be utilizing any sort of "Backward" steps in the Redemption of man.