What does Genesis 29:34 mean?
Leah's father, Laban, tricked her husband Jacob into marrying her. In fact, Laban had sneakily replaced Jacob's intended bride, Rachel, with Leah, her older sister, on the wedding night. The end result of this chaos was Jacob married to two women, but unexpectedly owing Laban another seven years of labor (Genesis 29:16–30). For this reason, it's not surprising to read that Jacob does not love Leah. Whether figuratively in comparison to his beloved Rachel, or literally, Jacob "hates" Leah (Genesis 29:31).Seeing this pain, God has allowed Leah to conceive sons while the favored Rachel has remained childless. The prior boys were named to reflect Leah's hope that Jacob would come to love her. Their names, Reuben and Simeon, serve as reminders that God has seen (Genesis 29:32) and heard (Genesis 29:33) her pain.
Leah now bears Jacob a third son. Again she names the boy based on her longing for her husband to love her. In Hebrew, Leviy literally means "joined to," and is very similar to the root of a word spoken by Leah earlier in the verse, lavah, which means "to become attached." Leah hopes this third son will cause Jacob to be attached to her in a way that he apparently never had been before.
Genesis 29:31–35 describes Leah's joy and heartbreak. Tricked into marrying Leah, Jacob's heart is never with her. He loves Rachel more; in fact, it would be fair to say he never loved Leah at all. The Lord, who is ever with Jacob, notices Leah's heartbreak and allows her to begin bearing children while Rachel remains childless. Leah's four sons are named in celebration of the Lord and His noticing her, as well as for her hope, or lack of it, that Jacob will come to love her.
Jacob's journey from his home brings him to his uncle's household in Haran. He falls in love with Laban's younger daughter Rachel and agrees to work for Laban for seven years to marry her. When the time comes, Laban switches out Rachel for her older, less attractive sister Leah. Jacob is surprised to find he has consummated the marriage with the wrong sister. Manipulative Laban assures Jacob he can still marry Rachel the next week, as long as he will work another seven years. Jacob loves Rachel more than Leah, but with the Lord's help, unloved Leah bears Jacob his first four sons.