Genesis 30:9-18

9When Leah saw that she had stopped bearing [children], she took Zilpah her maid and gave her to Jacob as a [secondary] wife.

10Zilpah, Leah’s maid, gave birth to a son for Jacob.

11Then Leah said, “How fortunate!” So she named him Gad (good fortune).

12Zilpah, Leah’s maid, gave birth to a second son for Jacob.

13Then Leah said, “I am happy! For women will call me happy.” So she named him Asher (happy).

14Now at the time of wheat harvest Reuben [the eldest child] went and found some mandrakes in the field, and brought them to his mother Leah. Then Rachel said to Leah, “Please give me some of your son’s mandrakes.”

15But Leah answered, “Is it a small thing that you have taken my husband? Would you take away my son’s mandrakes also?” So Rachel said, “Jacob shall sleep with you tonight in exchange for your son’s mandrakes.”

16When Jacob came in from the field in the evening, Leah went out to meet him and said, “You must sleep with me [tonight], for I have in fact hired you with my son’s mandrakes.” So he slept with her that night.

17God listened and answered [the prayer of] Leah, and she conceived and gave birth to a fifth son for Jacob.

18Then Leah said, “God has given me my reward because I have given my maid to my husband.” So she named him Issachar.