Genesis 30:38-40

Revised Geneva Translation

³⁸ Then he put the rods which he had peeled in the gutters and watering troughs where the sheep came to drink, so they could conceive (for they were in heat, when they came to drink).

³⁹ And the sheep were in heat before the rods; and they brought forth young of parti-color and with small and great spots.

⁴⁰ And Jacob parted these lambs and turned the faces of the flock toward the parti-colored and all manner of black among the sheep of Laban. So, he put his own flock by themselves, and did not put them with Laban’s flock.