Genesis 30:39-41

Revised Standard Version

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. ⁴¹ Whenever the stronger of the flock were breeding Jacob laid the rods in the runnels before the eyes of the flock, that they might breed among the rods,