Genesis 30:37-42

Amplified Bible

³⁷ Then Jacob took branches of fresh poplar and almond and plane trees, and peeled white stripes in them, exposing the white in the branches. ³⁸ Then he set the branches which he had peeled in front of the flocks in the watering troughs, where the flocks came to drink; and they mated and conceived when they came to drink. ³⁹ So the flocks mated and conceived by the branches, and the flocks ^[a]gave birth to streaked, speckled, and spotted offspring. ⁴⁰ Jacob separated the lambs, and [as he had done with the peeled branches] he made the flocks face toward the streaked and all the dark or black in the [new] flock of Laban; and he put his own herds apart by themselves and did not put them [where they could breed] with Laban’s flock. ⁴¹ Furthermore, whenever the stronger [animals] of the flocks were breeding, Jacob would place the branches in the sight of the flock in the watering troughs, so that they would mate and conceive among the branches; ⁴² but when the flock was sickly, he did not put the branches there; so the sicker [animals] were Laban’s and the stronger Jacob’s.