Deuteronomy 21:15

When a man shall have two wives - the one beloved and, the other hated, and they have borne him sons, both she that is beloved, and she that is hated, - and it shall be that the firstborn son belongeth to her that is hated,

Genesis 29:33

And she conceived again, and bare a son, and said. Because Yahweh heard that, I, was I hated, he gave me, this one also. So she called his name Simeon.

1 Samuel 1:4-5

And, when the day came for Elkanah to sacrifice, he used to give, to Peninnah his wife, and to all her sons and her daughters, portions;

Genesis 29:18

So Jacob loved Rachel, - and he said, I will serve thee seven years, for Rachel thy younger daughter.

Genesis 29:20

So Jacob served for Rachel - seven years, - and they became, in his eyes, as single days, for his love to her.

Genesis 29:30-31

So he went in, unto Rachel also, and loved, Rachel also, more than Leah, - and he served with 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
So Jacob loved Rachel, - and he said, I will serve thee seven years, for Rachel thy younger daughter.
1 Samuel 1:4
And, when the day came for Elkanah to sacrifice, he used to give, to Peninnah his wife, and to all her sons and her daughters, portions;