2 Chronicles 11:21

Rehoboam loved Maacah the daughter of Absalom more than all his other wives and concubines. For he had taken eighteen wives and sixty concubines and fathered twenty-eight sons and sixty daughters.

Deuteronomy 17:17

He shall not multiply wives for himself, or else his heart will turn away; nor shall he greatly increase silver and gold for himself.

2 Samuel 3:2-5

Sons were born to David at Hebron: his firstborn was Amnon, by Ahinoam the Jezreelitess;

Judges 8:30

Now Gideon had seventy sons who were his direct descendants, for he had many wives.

2 Samuel 5:13

Meanwhile David took more concubines and wives from Jerusalem, after he came from Hebron; and more sons and daughters were born to David.

1 Kings 11:3

He had seven hundred wives, princesses, and three hundred concubines, and his wives turned his heart away.

1 Chronicles 3:1-9

Now these were the sons of David who were born to him in Hebron: the firstborn was Amnon, by Ahinoam the Jezreelitess; the second was Daniel, by Abigail the Carmelitess;

2 Chronicles 11:23

He acted wisely and distributed some of his sons through all the territories of Judah and Benjamin to all the fortified cities, and he gave them food in abundance. And he sought many wives for them.

Song of Songs 6:8-9

“There are sixty queens and eighty concubines,
And maidens without number;

Treasury of Scripture Knowledge

Summary

And Rehoboam loved Maachah the daughter of Absalom above all his wives and his concubines: (for he took eighteen wives, and threescore concubines; and begat twenty and eight sons, and threescore daughters.)

Bible References

Eighteen wives

2 Chronicles 11:23
He acted wisely and distributed some of his sons through all the territories of Judah and Benjamin to all the fortified cities, and he gave them food in abundance. And he sought many wives for them.
Deuteronomy 17:17
He shall not multiply wives for himself, or else his heart will turn away; nor shall he greatly increase silver and gold for himself.
Judges 8:30
Now Gideon had seventy sons who were his direct descendants, for he had many wives.
2 Samuel 3:2
Sons were born to David at Hebron: his firstborn was Amnon, by Ahinoam the Jezreelitess;
2 Samuel 5:13
Meanwhile David took more concubines and wives from Jerusalem, after he came from Hebron; and more sons and daughters were born to David.
1 Kings 11:3
He had seven hundred wives, princesses, and three hundred concubines, and his wives turned his heart away.
1 Chronicles 3:1
Now these were the sons of David who were born to him in Hebron: the firstborn was Amnon, by Ahinoam the Jezreelitess; the second was Daniel, by Abigail the Carmelitess;
Song of Songs 6:8
“There are sixty queens and eighty concubines,
And maidens without number;

General references

Deuteronomy 21:16
then it shall be in the day he wills what he has to his sons, he cannot make the son of the loved the firstborn before the son of the unloved, who is the firstborn.
2 Samuel 5:13
Meanwhile David took more concubines and wives from Jerusalem, after he came from Hebron; and more sons and daughters were born to David.
Song of Songs 6:8
“There are sixty queens and eighty concubines,
And maidens without number;