Genesis 30:7 (BSB)

And Rachel’s servant Bilhah conceived again and bore Jacob a second son.

From Genesis 30. Also in the ESV.

Commentary on Genesis 30:7

• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on Genesis 30:1-13: We have here the bad consequences of that strange marriage which Jacob made with the two sisters. Here is, I. An unhappy disagreement between him and Rachel (Gen 30:1, Gen 30:2), occasioned, not so much by her own barrenness as by her sister's fruitfulness.
• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on Genesis 30:7: And Rachel said, with great wrestlings have I wrestled with my sister,.... Or, "with the wrestlings of God" (a), wrestling and striving in prayer with God; being vehement and importunate in her petitions to him, that she might have children as well as her sister: some render it, "I used the craftinesses of God", or "great craftiness with my sisters" (b); by giving her maid...
• Keil & Delitzsch (Lutheran), Biblical Commentary on the Old Testament on Genesis 30:1-8: Gen 30:1-8 Bilhah’s Sons. - When Rachel thought of her own barrenness, she became more and more envious of her sister, who was blessed with sons. But instead of praying, either directly or through her husband, as Rebekah had done, to Jehovah, who had promised His favour to Jacob (Gen 28:13.), she said to Jacob, in passionate displeasure, “Get me children, or I shall die;”...