I was once confronted by one who rejected Christ.  He stated, “God would never come to earth, become a man, and die on a cross for us.  He is God.  He would never do such a thing.” 

Unfortunately, this man’s knowledge of God is incomplete and barring a change of heart, he will spend all of eternity existing in dying separated from God(life).

The death of Christ on the cross is the fulfillment of the Old Testament and his blood is the power of the New Testament.  Without his death there is no inheritance(v16-17)!  Without His blood there is no remission of sin.  His blood is the cleansing that allows us to stand in the presence of The Most High!  God had to die to save us from our sin and He had to resurrect to give us eternal life!  The OT and the NT are both fulfilled by the one and the same Jesus, The Creator God.

Hebrews 9:14  How much more shall the blood of Christ, who through the eternal Spirit offered himself without spot to God, purge your conscience from dead works to serve the living God?

15   And for this cause he is the mediator of the new testament, that by means of death, for the redemption of the transgressions that were under the first testament, they which are called might receive the promise of eternal inheritance. 16  For where a testament is, there must also of necessity be the death of the testator. 17  For a testament is of force after men are dead: otherwise it is of no strength at all while the testator liveth. 18  Whereupon neither the first testament was dedicated without blood. 19  For when Moses had spoken every precept to all the people according to the law, he took the blood of calves and of goats, with water, and scarlet wool, and hyssop, and sprinkled both the book, and all the people, 20  Saying, This is the blood of the testament which God hath enjoined unto you. 21  Moreover he sprinkled with blood both the tabernacle, and all the vessels of the ministry. 22  And almost all things are by the law purged with blood; and without shedding of blood is no remission.