I mean this kindly, but what you've said displays an incredible ignorance of what Christians believe.
In fact, in the entire Bible, the only sins that any sacrfices could redeem were unintentional sins.
I happen to know a little bit about this
I'm sorry but you really don't.
Yes, I do. You see, I've actually read Tanakh (in the original Hebrew, btw). Show me a single source from JEWISH writings (including Tanakh and Talmud) that the Passover sacrifice was for "sin" or that sacrifices redeemed for intentional sins. You won't find them. The idea that Judaism believed or believes that sacrifices "save" from sin is a Christian fantasy manufactured to support the idea that a guy who died and accomplished nothing (i.e. didn't kick out the Romans, bring back the exiles, bring Jews back to Torah, etc.) was somehow the "Messiah."
I concur.