[RnMomof7]

I believe that you may be a bit too preoccupied with the details. Jesus' death looked nothing like a classic sacrifice scenario. It can only be considered such in that it was purposed and allowed by God.

May I suggest that it was not a sacrifice in the manner of the animals , but rather it was a willing offering that laid down His life

Jhn 10:17 Therefore doth my Father love me, because I lay down my life, that I might take it again.

Jhn 10:18 No man taketh it from me, but I lay it down of myself. I have power to lay it down, and I have power to take it again. This commandment have I received of my Father

[malakhi]

This commandment have I received of my Father

In this context I find this portion of the verse very interesting. You'll note that he doesn't say he received this commandment from scripture, but rather from God.