Genesis 3:21
21 And Jehovah God doth make to the man and to his wife coats of skin, and doth clothe them.
Was there an animal
I thought that was the accepted belief that the first sacrifice was made by Christ to cover Adam and Eve, and foreshadows His sacrifice when his blood covers us. It’s a beautiful, tragic, mind blowing image.
Everything in the OT is a foreshadowing of the future coming of the Christ who would make the ultimate sacrifice to cover sin. The OT sacrifices of a lamb were imperfect and could only ever make a tempory atonement; unlike the Lamb of God who's blood would cover/atone for all sin by conquering death itself. And yes, it is a beautiful, tragic, mind blowing image.
What I see in that one scripture, Genesis 3:21 is the first glimpse of the plan God had even before the foundation of the world. A Lamb, Jesus Christ slain from the foundation of the world.” Rev 13:8
A second witness can be found in 1 Peter chapter 1: 19. But with the precious blood of Christ, as of a lamb without blemish and without spot:
20 Who verily was foreordained before the foundation of the world, but was manifest in these last times for you,
21 Who by him do believe in God, that raised him up from the dead, and gave him glory; that your faith and hope might be in God.”
This despells any debate that God did not antisipate his humane creation would disobey. Not only did he know they would, he created them subject to futility, and had made provisions to bring salvation even before the foundation of the world.
Romans 8:20
For the creature was made subject to vanity : "futility"] , not willingly, but by reason of Him [God] Who has subjected [Gk: 'subjects'-aorist tense-subjecting is still going on] the same in hope"