God prepared a body for Christ to come to do God’s will to be God’s unique sacrifice on the cross

Christ was obedient to God even unto death, and that the death of the cross (Phil. 2:8). Christ did the will of God as prophesied in the Old Testament and as God Himself wanted – He became a man, lived a perfect human life, died an all-inclusive and all-terminating death on the cross, and He resurrected to be the life-giving Spirit. In His death especially Christ terminated the old testament economy of God and established God’s New Testament economy where Christ is everything: He is the sacrifices, He is the offerings, He is the unique way for us to contact and enjoy God!

as the factor to enact God’s New Testament economy, Christ replaced all the sacrifices with Himself

Praise the Lord – everything of the old is gone, now everything is new! God is new, Christ is new, and we are the new creation! In His incarnation and His death Christ replaced everything of the old – including the old creation – with Himself, the new and living One! In Psalm 2, Psalm 8, Psalm 16, Psalm 22-24 we can see what kind of Christ we have in His incarnation – He came to carry out God’s will and His commission to terminate the old and bring in the new creation. We were included in the old creation terminated and germinated by Him! In Christ we are no longer old – we are a new creation