Genesis 15:10-12

New Revised Standard Version Catholic Edition

¹⁰ He brought him all these and cut them in two, laying each half over against the other; but he did not cut the birds in two. ¹¹ And when birds of prey came down on the carcasses, Abram drove them away.

¹² As the sun was going down, a deep sleep fell upon Abram, and a deep and terrifying darkness descended upon him.