The Gospels were not written by Jesus, so who knows what he really believed. These are TWO SEPARATE RELIGIONS. feel free to debate it with MY RABBI WHO WILL SET YOU STRAIGHT.
A blood sacrifice is required for atonement. Adonai offered the perfect sacrifice, his Son the messiah, whose last words before dying was, "It is finished."
He is is the final sacrifice. Put your hand on his head and realize that He is your atonement now.