Deuteronomy 21:15

“If a man has two wives, the one loved and the other unloved, and both the loved and the unloved have borne him sons, if the firstborn son belongs to the unloved,

Genesis 29:33

Then she conceived again and bore a son and said, “Because the Lord has heard that I am unloved, He has therefore given me this son also.” So she named him Simeon.

1 Samuel 1:4-5

When the day came that Elkanah sacrificed, he would give portions to Peninnah his wife and to all her sons and her daughters;

Genesis 29:18

Now Jacob loved Rachel, so he said, “I will serve you seven years for your younger daughter Rachel.”

Genesis 29:20

So Jacob served seven years for Rachel and they seemed to him but a few days because of his love for her.

Genesis 29:30-31

So Jacob went in to Rachel also, and indeed he loved Rachel more than Leah, and he served with Laban for another seven years.

Treasury of Scripture Knowledge

Summary

Deuteronomy 21:15

If a man have two wives, one beloved, and another hated, and they have born him children, both the beloved and the hated; and if the firstborn son be hers that was hated:

Two wives

Genesis 29:18

1 Samuel 1:4

Bible References

Two wives

Now Jacob loved Rachel, so he said, “I will serve you seven years for your younger daughter Rachel.”

When the day came that Elkanah sacrificed, he would give portions to Peninnah his wife and to all her sons and her daughters;