Genesis 29:31

31 When the Lord saw that Jacob loved Rachel more than Leah, he made it possible for Leah to have children, but not Rachel.

Genesis 29:31 Meaning and Commentary

Genesis 29:31

And when the Lord saw that Leah [was] hated
Not properly and simply hated by Jacob, as appears by his doing the duty of an husband to her, but comparatively; she was less loved than Rachel: and there are many things to be said for it; she was not beautiful as Rachel was; she was not Jacob's choice, as she was but imposed upon him through deceit, and he was forced to marry her, or he could not have Rachel his beloved wife: but the Lord had pity on her, and that she might have a share in her husband's affections, he opened her womb;
or gave her conception; as Onkelos paraphrases it: but Rachel [was] barren;
bare no children as yet, and for many years after, ( Genesis 30:22-24 ) .

Genesis 29:31 In-Context

29 (Laban gave his slave girl Bilhah to his daughter Rachel to be her servant.)

30 So Jacob had sexual relations with Rachel also, and Jacob loved Rachel more than Leah. Jacob worked for Laban for another seven years.

31 When the Lord saw that Jacob loved Rachel more than Leah, he made it possible for Leah to have children, but not Rachel.

32 Leah became pregnant and gave birth to a son. She named him Reuben, because she said, "The Lord has seen my troubles. Surely now my husband will love me."

33 Leah became pregnant again and gave birth to another son. She named him Simeonn and said, "The Lord has heard that I am not loved, so he has given me this son."