40 Jacob separated the lambs, and set the faces of the flocks toward the streaked and all the black in the flock of Laban: and he put his own droves apart, and didn't put them into Laban's flock.
*Minor differences ignored. Grouped by changes, with first version listed as example.
Jacob did separate the lambs, etc. - When Jacob undertook the care of Laban's flock, according to the agreement already mentioned, there were no party-colored sheep or goats among them, therefore the ring-streaked, etc., mentioned in this verse, must have been born since the agreement was made; and Jacob makes use of them precisely as he used the pilled rods, that, having these before their eyes during conception, the impression might be made upon their imagination which would lead to the results already mentioned.
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, &c. 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.
*More commentary available at chapter level.