The important thing to remember is that Jesus was not a murder victim - He was a Sacrifice.
When Isaac was taken up the mountain by his father Abraham to be sacrificed, he provided us with a picture of what happened when God the Father sacrificed His Son, Jesus Christ.
When the Jews (and other pre-Christian peoples) offered Sacrifices to God, they believed that the thing being sacrificed was not being destroyed, but rather, that it was being sent, intact and alive, to Heaven.
I have sometimes wondered whether Isaac was ever disappointed that he didn’t get to go directly to Heaven on that day. In any case, he would not have believed that he was being destroyed (murdered) but that he was being given to God, to go and live with God for eternity.
Just as Isaac was restored safe and alive to his father, so also, Jesus was restored safe and alive, through the Resurrection.
For me, it always comes back to that line, which I heard in a movie - “Which one should I sacrifice, Daddy?” “The one you love best of all, my son.”
This is the summary of all the teachings of the Old Testament on the nature of sacrifice.
EDIT: Christ’s return at the Resurrection, intact and alive, is the evidence that His death on the Cross was indeed a sacrifice, and not a murder.