Genesis 30:3 (BSB)

Then she said, “Here is my maidservant Bilhah. Sleep with her, that she may bear children for me, so that through her I too can build a family.”

From Genesis 30. Also in the ESV.

Commentary on Genesis 30:3

• John Calvin (Reformed), Calvin's Commentaries on Genesis 30:3: 3. Behold my maid Bilhah. Here the vanity of the female disposition appears. For Rachel is not induced to flee unto the Lord, but strives to gain a triumph by illicit arts. Therefore she hurries Jacob into a third marriage. Whence we infer, that there is no end of sinning, when once the Divine institution is treated with neglect.
• 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 30:3: And she said,.... in order to pacify Jacob, and explain her meaning to him; which was, not that she thought it was in his power to make her the mother of children, but that he would think of some way or another of obtaining children for her, that might go for hers; so the Arabic version, "obtain a son for me": but, since no method...
• Jamieson-Fausset-Brown (Reformed), Commentary Critical and Explanatory on the Whole Bible on Genesis 30:3: Bilhah . . . Zilpah--Following the example of Sarah with regard to Hagar, an example which is not seldom imitated still, she adopted the children of her maid. Leah took the same course. A bitter and intense rivalry existed between them, all the more from their close relationship as sisters; and although they occupied separate apartments, with their families, as is the uniform custom where...