Genesis 30:7-9

Amplified Bible

⁷ Bilhah, Rachel’s maid, conceived again and gave birth to a second son for Jacob. ⁸ So Rachel said, “With mighty wrestlings [in prayer to God] I have struggled with my sister and have prevailed.” So she named him Naphtali (my wrestlings).

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