15 But Leah angrily replied, "Wasn't it enough that you stole my husband? Now will you steal my son's mandrakes, too?" Rachel answered, "I will let Jacob sleep with you tonight if you give me some of the mandrakes." 16 So that evening, as Jacob was coming home from the fields, Leah went out to meet him. "You must come and sleep with me tonight!" she said. "I have paid for you with some mandrakes that my son found." So that night he slept with Leah.
Matthew Henry's Commentary on Genesis 30:15-16
Commentary on Genesis 30:14-24
(Read Genesis 30:14-24)
The desire, good in itself, but often too great and irregular, of being the mother of the promised Seed, with the honour of having many children, and the reproach of being barren, were causes of this unbecoming contest between the sisters. The truth appears to be, that they were influenced by the promises of God to Abraham; whose posterity were promised the richest blessings, and from whom the Messiah was to descend.