Deuteronomy 21:15

When there shall be to a man two wives, the one loved and the one hated, and they bare sons to him, the loved and the hated, and the first-born son was to her being hated:

Genesis 29:33

And she will yet again conceive and bear a son, and she will say that Jehovah heard that I am hated, and he will give to me this also; and she will call his name Simeon.

1 Samuel 1:4-5

And the day will be and Elkanah will sacrifice, and he gave to Peninnah his wife, and to all her sons and her daughter, portions

Genesis 29:18

And Jacob will love Rachel, and will say, I will serve thee seven years for Rachel thy daughter the small.

Genesis 29:20

And Jacob will serve for Rachel seven years, and they will be in his eyes as a few days in his loving her.

Genesis 29:30-31

And he will go in also to Rachel, and he will also love Rachel more than Leah, and he will serve with him yet other seven years.

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 will love Rachel, and will say, I will serve thee seven years for Rachel thy daughter the small.
1 Samuel 1:4
And the day will be and Elkanah will sacrifice, and he gave to Peninnah his wife, and to all her sons and her daughter, portions