Where did life begin? In Eden. In Eden were all the necessities of life: nourishment, shelter, communion, knowledge, purpose, and identity.
What is a sacrifice? The separation of body from life by a blade, and consumption of that body by fire.
What did God put at the entry to Eden? An angel with a fiery sword.
What are we to conclude? Access to life is made via sacrifice, and the life you want is a result of being separated from your flesh, and letting former things be consumed that you might find new life, no longer in the flesh, but in God.
I beseech you therefore, brothers, by the mercies of God, to present your bodies as a living sacrifice, holy and acceptable to God, which is your spiritual worship. Romans 12:1
The significance of an animal offering, the reason why the aroma of the animal turned into rising smoke becalms God’s “burning nostrils” (the Hebraic term for God being angry) is that it represents a complete offering to God, nothing is reserved, all is given, fulfillment is realized in giving up one’s tenuous claim to physical life and finding new purpose in being made living spirit-rising smoke/cloud. We think of it as violence, God views it as total dedication, and in receiving that offering He imbues the animal with spirit (transforms it into smoke, and receives it into Himself, whose glory is always seen on earth as fire or smoke, pillar or cloud).
Please consider the previous paragraph provisional. I’m exploring something here; I know I’m on to something, but I wouldn’t want to be pinned down to defending it as presently expressed.