Gen 3.21; 4.4; et al. – Sacrifices
Starting with the animals that had to die for clothing Adam and Eve, every sacrifice ultimately foreshadowed the sacrifice of Christ, which would end all sacrifices,
“Also for Adam and his wife the LORD God made tunics of skin, and clothed them” (Gen 3.21).
“Abel also brought of the firstborn of his flock and of their fat. And the LORD respected Abel and his offering…” (Gen 4.4).
For Adam and Eve to have tunics of skin, the Lord had to take the lives of some animals, and obviously Abel sacrificed animals to the Lord.
These incidents show the Lord setting the ground work for the mighty sacrifice of the Messiah that would end all animal sacrifices.
Hebrews 10.1, 2 explains that such animal sacrifices never finished the job, which is why they had to keep being offered repeatedly through the centuries.
Hebrews 13.10–13 declares that Jesus fulfilled all those sacrifices, and since His sacrifice did the job, we no longer have need for animal sacrifices.