Genesis 15:8-10 King James Version (KJV)

8. And he said, Lord God, whereby shall I know that I shall inherit it?

9. And he said unto him, Take me an heifer of three years old, and a she goat of three years old, and a ram of three years old, and a turtledove, and a young pigeon.

10. And he took unto him all these, and divided them in the midst, and laid each piece one against another: but the birds divided he not.

Genesis 15