Genesis 30:40

40 Jacob kept the sheep separate from the goats and made them face in the direction of the streaked and black animals of Laban's flock. In this way he built up his own flock and kept it apart from Laban's.

Genesis 30:40 Meaning and Commentary

Genesis 30:40

And Jacob did separate the lambs
The ringstraked, speckled, and spotted; and set the faces of the flocks,
that were all white, towards the ringstraked, and all the brown in the flock of Laban;
either to go before those that were all white, that they by looking at them might conceive and bring forth such, which was another artifice of Jacob's to increase his own sheep; or else he set at the water troughs the white sheep on one side of them, and on the opposite side the speckled ones that the same effect might also be produced the more successfully both by the rods and by the speckled lambs: and he put his own flocks by themselves, and put them not unto Laban's
cattle;
partly that they might not be mixed together, but kept distinct, that what was his property might be discerned from Laban's; and partly, lest his spotted ones, being mixed with Laban's white sheep, by continual looking at them, should conceive and bring forth such likewise, and so his flocks be lessened.

Genesis 30:40 In-Context

38 He placed these branches in front of the flocks at their drinking troughs. He put them there, because the animals mated when they came to drink.

39 So when the goats bred in front of the branches, they produced young that were streaked, speckled, and spotted.

40 Jacob kept the sheep separate from the goats and made them face in the direction of the streaked and black animals of Laban's flock. In this way he built up his own flock and kept it apart from Laban's.

41 When the healthy animals were mating, Jacob put the branches in front of them at the drinking troughs, so that they would breed among the branches.

42 But he did not put the branches in front of the weak animals. Soon Laban had all the weak animals, and Jacob all the healthy ones.