- To prove that resurrection is real
- To let Jesus experience a painful death alone (his Father didn't comfort him on the cross), because in pain man is perfected, even the Son of man
- To earn the right to represent God and receive all authority from his Father to take charge of us.
Notice I leave out "to die for our sins", because that makes no sense (believe me, I searched the entire bible). However, he did say that his death was for remission of sin, so we have to hold this in tension. Nevertheless, it's very clear from the New Testament that what Jesus was offering us was the greatest gift from God we could receive: eternal life, forgiveness of sins, and pure joy in the world the come. To whatever degree Jesus' death helped him and us in that regard, we should be grateful.