Genesis 30:38-40

Revised Standard Version Catholic Edition

³⁸ He set the rods which he had peeled in front of the flocks in the runnels, that is, the watering troughs, where the flocks came to drink. And since they bred when they came to drink, ³⁹ the flocks bred in front of the rods and so the flocks brought forth striped, speckled, and spotted. ⁴⁰ And Jacob separated the lambs, and set the faces of the flocks toward the striped and all the black in the flock of Laban; and he put his own droves apart, and did not put them with Laban’s flock.