And he gave him Rachel his daughter to him for a wife (Gen. 28:28)
How did Jacob marry both Rachel and Leah, when the Torah prohibits a man from being married to two sisters at the same time? The lineage of the children of a non-Jew (Laban) is determined by their mother; Rachel and Leah were the daughters of two different women. Accordingly, Rachel and Leah did not have the legal status of sisters. (Bechor Shor)
It is not yet time that the cattle should be gathered together; water the sheep, and go and feed them (Gen. 29:7)
Rabbi Meir of Premishlan used to pray: "Father in Heaven! If it is not yet time to gather the lost flock of Israel in the Final Redemption, at least bless them abundantly from Your full and Holy Hand, that they may be able to anticipate and look forward to Your salvation, may it come speedily in our day."
G-d saw that Leah was hated, and he opened her womb (Gen. 29:31)
G-d forbid that our holy Patriarch Jacob "hated" his wife Leah! Rather, as is often the case among righteous people, Leah was forever critical of herself, always seeking character flaws to improve upon. (Kol Simcha)
This time I will praise the L-rd...and she left off bearing children (Gen. 29:35)
As brought down in the Talmud (Berachot 54), whenever a Jew offers thanks to G-d for the past, he must immediately take the opportunity to pray for the future. However, when Leah thanked G-d for the birth of Judah, she did not do this; thus "she left off bearing children." (The Rebbe of Lublin)