The ceremonial laws of the Torah were difficult but never the less necessary act of redemption for the individual, the blood sacrifices had to be repeated year in and year out and they had to be done in the wilderness in the Tabernacle or later in the Temple at Jerusalem.  For the Jews living elsewhere in the country, miles from Jerusalem, it was a necessary burden  - a minimum of three times a year - to offer their sacrifices trough the high priest to the Lord for the atonement of their sins.  Many Jews who loved the Lord travelled from afar.  Others built their own altars on mountains and hills closer to home and offered their sacrifices there.

But no atonement was granted at these rival alters, and the prophets of God railed against and condemned this deviation from the Law of God.  Many had failed to learn the lesson of Cain - that one cannot come to God for forgiveness in any way one may choose, but one must come in the way God himself has prescribed as detailed in the account of Genesis.

The hope was given to Chava (Eve) who was given the prophecy to show that a male figure would be born to take away the burden and crush the head of Satan.

Genesis 3:15 "And I will put enmity between thee and the woman, and between thy seed and her seed; it shall bruise thy head, and thou shalt bruise his heel."

Isaiah the prophet also was provided the hope that the day would when the arm of Yahweh would be revealed.  In Isaiah 53, God declared that the suffering servant, the Messiah, would be the sacrifice for sin:

"Yet it pleased Yahweh to bruise him; he hath put him to grief; when thou shalt make his soul an offering for sin, he shall see his seed, he shall prolong his days, and the pleasure of Yahweh shall prosper in his hand.  He shall see of the travail of his soul, and shall be satisfied; by the knowledge of himself shall my righteous servant justify many; and he shall bear their iniquities." (Isaiah 53:10-11)

The point of Isaiah 53 was to show that a person would be born who would be anointed and killed to pay the penalty of sin.  God's intent from the beginning was for there to be one final blood sacrifice, and that would be the sacrifice of the Messiah Himself (the perfect sacrifice).  That is why Isaiah 53 uses the same type of wording, figures and emphasis found in the Book of Leviticus.  For example, the expression, "thou shall make his soul an offering for sin," is a sacrificial concept and is thus applied to the Messiah who was going to release the people from the bondage of sin.  These are words that come out of the Torah.  Also, "by the knowledge of himself shall My righteous servant justify many; and He shall bear their iniquities."  Not only are these words of sacrifice used generally in the old testament Law, but, more specifically, we read of these very terms in Leviticus 16, which is the chapter that expounds and explains all of the details regarding the Yom Kippur or Day of Atonement sacrifice.

The question of why the Messiah had to die is answered in the book of Hebrews with what was demanded by Yahweh and by the hope of Isaiah 53.  That which the Tenach hoped for was found in the New Testament in total fulfilment by the death of Messiah on the cross.

The superiority of Christ over all other sacrifices is pointed out in Hebrews 9:11-12

But Christ having come a high priest of the good things to come, through the greater and more perfect tabernacle, not made with hands, that is to say, not of this creation, nor yet through the blood of goats and calves, but through his own blood, entered in once for all into the holy place, having obtained eternal redemption.

Unlike the animal sacrifices, the sacrifice of Jesus was to bring eternal redemption rather than temporary covering as in the Tabernacle or Temple times.  This is the big distinction between the two systems.  Furthermore, even after the animal sacrifice, the Jew was still conscience of his sins, as soon as he walked away he could be guilty of a sin committed inadvertently or intentionally.  Faith in the sacrifice of Jesus, however, brings a complete cleansing of the conscience of sins past, present and future, however that does not give you a license to sin.

By the which will we are sanctified through the offering of the body of Jesus Christ once for all. (Heb 10:10)

The Lord Jesus became our blood atonement by one perfect sacrifice.

And being made perfect, he became the author of eternal salvation unto all them that obey him; (Heb 5:9)

Jesus made plain that he is the ONLY way to heaven.

Jesus said to him, "I am the way, the truth, and the life. No one comes to the Father except through Me.  (John 14:6)

Not only that but we are told he is the ONE truth we must grasp.

"Nor is there salvation in any other, for there is no other name under heaven given among men by which we must be saved.'' (Acts 4:12)

This sets the stage for Yeshua [Jesus Christ] who is the ONE and ONLY WAY to heaven, any other way leads to spiritual death and you cannot enter heaven whether you are Jew or gentile.