Genesis 15:9-11

9He said to him, “Bring me a heifer three years old, a female goat three years old, a ram three years old, a turtledove, and a young pigeon.” 10And he brought him all these, acut them in half, and laid each half over against the other. But bhe did not cut the birds in half. 11And when birds of prey came down on the carcasses, Abram drove them away.

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