Genesis 15:9-13

9He answered Abram, “Bring me a three-year-old heifer, a three-year-old female goat, a three-year-old ram, a mourning dove, and a pigeon.”

10So Abram brought all these animals to him. He cut each of them in half and laid each half opposite the other. However, he did not cut the birds in half.

11When birds of prey came down upon the carcasses, Abram drove them away.

12As the sun was just about to set, a deep sleep—a dreadful, deep darkness—came over Abram.

13God said to Abram, “You can know for sure that your descendants will live in a land that is not their own, where they will be slaves, and they will be oppressed for 400 years.