John Calvin Reformed @genevareformer

31. And when the Lord saw. Moses here shows that Jacob’s extravagant love was corrected by the Lord; as the affections of the faithful, when they become inordinate, are wont to be tamed by the rod. Rachel is loved, not without wrong to her sister, to whom due honor is not given.

Matthew Henry Presbyterian @wholebiblehenry

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

John Gill Reformed Baptist @doctorgill

And Leah conceived, and bare a son, and she called his name Reuben,.... That is, "see the son", as if she by this name called upon her husband, her friends, and all about her, to look at him, and view him; perhaps hoping and imagining he might be the famous son, the promised seed, the Messiah that was to spring to Abraham, in the line...