Here is the difference
@Jeremiahcp :
Scenario 1 (OP focus): Pretend I am a mother and I am god. My daughter is drowning, I jump in to save her by dying in her place. (The decision is on my behalf-that is why it is a sacrifice)
I know. I know. I didn't
really die. But the point of christianity is that the child was saved.
2. Scenario 2: I am a daughter (a human) and I have a child. My child is drowning. I don't want to die since I am human. My mother says I need to save the child. So, obeying my mother, I save the child sacrificing my
human life for the life of the child.
The decision was made on behalf of my mother. So it was a ransom. My dying to save my child became a ransom of my life (another form of sacrifice) for that child to live.
The OP is looking at this wrong.
Look at the sacrifice as a ransom. If you look at it by sacrificing oneself for another, godliness has nothing to do with it.
If you are only concerned about jesus, then you are right, it isn't a sacrifice.