Verse 42. - But when the cattle were feeble, - literally, in the covering (sc. with wool; hence weakening) of the flock, which took place in autumn - he put them not in (partly to prevent the introduction of feeble animals amongst his parti-colored flocks, but partly also, it is thought, to avoid prematurely exciting Laban's suspicion): so the feebler were Laban's, and the stronger Jacob's.

30:25-43 The fourteen years being gone, Jacob was willing to depart without any provision, except God's promise. But he had in many ways a just claim on Laban's substance, and it was the will of God that he should be provided for from it. He referred his cause to God, rather than agree for stated wages with Laban, whose selfishness was very great. And it would appear that he acted honestly, when none but those of the colours fixed upon should be found among his cattle. Laban selfishly thought that his cattle would produce few different in colour from their own. Jacob's course after this agreement has been considered an instance of his policy and management. But it was done by intimation from God, and as a token of his power. The Lord will one way or another plead the cause of the oppressed, and honour those who simply trust his providence. Neither could Laban complain of Jacob, for he had nothing more than was freely agreed that he should have; nor was he injured, but greatly benefitted by Jacob's services. May all our mercies be received with thanksgiving and prayer, that coming from his bounty, they may lead to his praise.And when the cattle were feeble, he put them not in,.... Or "when covered", as Menachem, that is, with wool, and so not so desirous of copulation with the males, nor so fit and strong for generation; and therefore he put not in the rods into the gutters, partly that he might have none feeble in his flock, and partly that he might not spoil Laban of his whole flock, strong and weak:

so the feebler were Laban's, and the stronger Jacob's; not only his flocks became more numerous than Laban's, but were a better quality.