Genesis 15:6-10 KJV

6 And he believed in the LORD; and he counted it to him for righteousness. 7 And he said unto 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, 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.