Genesis 15:10-12

King James Version

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.

¹¹ And when the fowls came down upon the carcases, Abram drove them away.

¹² And when the sun was going down, a deep sleep fell upon Abram; and, lo, an horror of great darkness fell upon him.