“Any man…who slaughters an ox, sheep or goat…but didn’t bring it to the entrance of the Tent of Meeting, as means to get closer to God – it will be considered as bloodshed.”
~ Leviticus 17:3-4
When animal-sacrifice was permitted, it was only within the Temple sanctuary.
In an astonishingly ‘green’ reaction, Judaism considers one who violates this law as if they’d murdered a human. Why?
Because from plankton to whales and ants to elephants, all creatures and all things have a purpose in creation. Ultimately, their function serves us in our spiritual mission to perfect the world.
However, we’re only permitted to use them within that specific context. As such, anything else is simply destructive.