I pray thee, if I have found favor in thine eyes. We perceive hence, that Jacob had not been a burdensome guest, seeing that Laban soothes him with bland address, in order to procure from him a longer continuance in his service. For, sordid and grasping as he was, he would not have suffered Jacob to remain a moment in his house, unless he had found his presence to be a certain source of gain. Inasmuch therefore, as he not only did not thrust him out, but anxiously sought to retain him, we hence infer that the holy man had undergone incredible labors, which had not only sufficed for the sustenance of a large family, but had also brought great profit to his father-in-law. Wherefore, he complains afterwards, not unjustly, that he had endured the heat of the day, and the cold of the night. Nevertheless, there is no doubt, that the blessing of God availed more than any labors whatever, so that Laban perceived Jacob to be a kind of horn of plenty, as he himself confesses. For he not only commends his fidelity and diligence, but expressly declares that he himself had I been blessed by the Lord, for Jacob's sake. It appears, then, that the wealth of Laban had so increased, from the time of Jacob's coming, that it was as if his gains had visibly distilled from heaven. Moreover, as the word nchs (nachash,) among the Hebrews, means to know by auguries or by divination, some interpreters imagine that Laban, having been instructed in magic arts, found that the presence of Jacob was useful and profitable to him. Others, however, expound the words more simply, as meaning that he had proved it to be so by experiment. To me the true interpretation seems to be, as if he had said, that the blessing of God was as perceptible to him, as if it had been attested by prophecy, or found out by augury.

I have learned by experience - נחשתי nichashti, from נחש nachash, to view attentively, to observe, to pry into. I have diligently considered the whole of thy conduct, and marked the increase of my property, and find that the Lord hath blessed me for thy sake. For the meaning of the word נחש nachash, See note on Genesis 3:1, etc.

And Laban said unto him, I pray thee, if I have found favour in thine eyes, tarry,.... One would think he could not expect to have much from him, by his treatment of him; but he craftily cajoles him in this fawning, flattering way, in order to gain a point, and begs of him, in a very humble and suppliant manner, if he had any love for him, that he would not depart from him, but stay with him, which he should take as a great favour; for he could not insist upon it, as bound in duty, or as a point of justice:
for I have learned by experience; by the observations made in the fourteen years past:
that the Lord hath blessed me for thy sake: Laban had so much religion as to ascribe the blessings, the good things he had, to the Lord, as the author and giver of them; and so much honour, or however, thought it was more his interest to own it, that it was for Jacob's sake that he was thus blessed: the word translated is used sometimes of divination, and the Targums of Jonathan and Jerusalem render it, "I have used divinations"; and according to Jarchi and Aben Ezra, Laban was a diviner and soothsayer; and by the teraphim he had in his house, Genesis 31:19; he divined, and knew thereby that he was blessed for the sake of Jacob; but, as Schmidt observes, it is not credible that the devil should give so famous a testimony to Laban of Jehovah and Jacob.

Laban said . . . I have learned--His selfish uncle was averse to a separation, not from warmth of affection either for Jacob or his daughters, but from the damage his own interests would sustain. He had found, from long observation, that the blessing of heaven rested on Jacob, and that his stock had wonderfully increased under Jacob's management. This was a remarkable testimony that good men are blessings to the places where they reside. Men of the world are often blessed with temporal benefits on account of their pious relatives, though they have not always, like Laban, the wisdom to discern, or the grace to acknowledge it.