Genesis 15:8 WBT

⁶  And he believed in the LORD; and he counted it to him for righteousness.

⁷  And he said to him, I [am] the LORD that brought thee out of Ur of the Chaldees, to give thee this land to inherit it.

⁸  And he said, Lord GOD, by what shall I know that I shall inherit it?

⁹  And he said to him, Take me a heifer of three years old, and a she-goat of three years old, and a ram of three years old, and a turtle-dove, and a young pigeon.

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