Genesis 15:9

And he said unto him, Take me an heifer of three years old, and a she goat of three years old, and a ram of three years old, and a turtledove, and a young pigeon.

Ver. 9. Take me a heifer, &c.] Here God commands him a busy sacrifice, and then casts him into a terrible sleep; the better to prepare him to receive the ensuing oracle, and to teach him that he may not rashly rush upon divine mysteries. Heathens could say, Non loquendum de Deo absque lumine; a that is, without premeditation and advised consideration.

a Pythagoras