Deuteronomy 21:15

If a man have two wives, one loved and another hated, and they have borne him children, both the loved and also the hated;

Genesis 29:33

And she conceived again and bare a son, and said, "The LORD hath heard that I am despised, and hath therefore given me this son also." And she called him Simeon.

1 Samuel 1:4-5

And it fell on a day, as Elkanah had offered, that he gave to Peninnah his wife and to all her sons and daughters portions.

Genesis 29:18

And Jacob loved her well, and said, "I will serve thee seven years for Rachel thy youngest daughter."

Genesis 29:20

And Jacob served seven years for Rachel, and they seemed unto him but a few days, for the love he had to her.

Genesis 29:30-31

So lay he by Rachel also, and loved Rachel more than Lea, and served him yet seven years more.

Treasury of Scripture Knowledge

Summary

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:

Bible References

Two wives

Genesis 29:18
And Jacob loved her well, and said, "I will serve thee seven years for Rachel thy youngest daughter."
1 Samuel 1:4
And it fell on a day, as Elkanah had offered, that he gave to Peninnah his wife and to all her sons and daughters portions.