As we are seeing, every aspect of the Day of Atonement is full of types and foreshadows. The imperfect high priests have been replaced by Jesus, the perfect High Priest. The imperfect mediation between the people and God is now perfect because Jesus is the sole mediator between them.
Among other things, Leviticus tells us about the cost of sin. We begin to see that within the enumeration of the various sacrifices and offerings God is spiritually leading the children of Israel as well as physically leading them.
Jesus is the Prophet that Moses declared. The whole point of this article is to demonstrate that the life and events of Moses predicted the actions and authenticity of the one true Redeemer, Jesus the Messiah.
So we see a horizontal component in Abraham’s name. No longer is he just vertically exalted but, by the new name God gave him, Abraham is horizontally exalted. When you put the vertical and horizontal components together, we get a cross, a foreshadowing of the Cross of Jesus Christ.