Again she conceived and bore a son, and said, “Now this time my husband will be attached to me, because I have borne him three sons.” Therefore his name was called Levi.
We have here the birth of four of Jacob's sons, all by Leah. Observe, 1. That Leah, who was less beloved, was blessed with children, when Rachel was denied that blessing, Gen 29:31. See how Providence, in dispensing its gifts, observes a proportion, to keep the balance even, setting crosses and comforts one over-against another, that none may be either too much elevated or too much depressed.
Commenting on Genesis 29:31-35
And she conceived again, and bare a son,.... A fourth son, a son in whose line, and from whose tribe, the Messiah was to spring: and she said, now will I praise the Lord; she had praised him before for looking on her affliction, and hearing her cries, and giving her one son after another; but now she determines to praise him more than ever...
Therefore was his name called Levi - לוי levi, joined; because she supposed that, in consequence of all these children, Jacob would become joined to her in as strong affection, at least, as he was to Rachel. From Levi sprang the tribe of Levites, who instead of the first-born, were joined unto the priests in the service of the sanctuary. See Num 18:2, Num 18:4.