Genesis 15:8-12, 17-18

But Abram said, “Lord GOD, by what [proof] will I know that I will inherit it?” So God said to him, “Bring Me a three-year-old heifer, a three-year-old female goat, a three-year-old ram, a turtledove, and a young pigeon.” So Abram brought all these to Him and cut them down the middle, and laid each half opposite the other; but he did not cut the birds. The birds of prey swooped down on the carcasses, but Abram drove them away. When the sun was setting, a deep sleep overcame Abram; and a horror (terror, shuddering fear, nightmare) of great darkness overcame him.

When the sun had gone down and a [deep] darkness had come, there appeared a smoking brazier and a flaming torch which passed between the [divided] pieces [of the animals]. [Jer 34:18, 19] On the same day the LORD made a covenant (promise, pledge) with Abram, saying, “To your descendants I have given this land, From the river of Egypt to the great river Euphrates