2 Chronicles 11:21

Rehoboam loved Maacah, Absalom's granddaughter, more than all his other wives and concubines. He had eighteen wives and sixty concubines. He fathered twenty-eight sons and sixty daughters.

Deuteronomy 17:17

He must not take many wives or his heart will turn astray. He must not accumulate large amounts of silver and gold.

2 Samuel 3:2-5

Sons were born to David while he was in Hebron. His first son was Amnon, born to Ahinoam from Jezreel.

Judges 8:30

He had many wives and seventy sons.

2 Samuel 5:13

David left Hebron and moved to Jerusalem. He married many women from Jerusalem, and he had a lot of children.

1 Kings 11:3

He had seven hundred wives, daughters of kings, and three hundred other wives. His wives influenced his heart to turn away.

1 Chronicles 3:1-9

These were the sons of David born to him in Hebron: The firstborn was Amnon the son of Ahinoam of Jezreel; the second, Daniel the son of Abigail of Carmel;

2 Chronicles 11:23

He wisely placed his sons in every region of Judah and Benjamin, in every fortified city. He gave them allowances and obtained many wives for them.

Song of Songs 6:8-9

There are sixty queens, and eighty concubines, and virgins 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 wisely placed his sons in every region of Judah and Benjamin, in every fortified city. He gave them allowances and obtained many wives for them.
Deuteronomy 17:17
He must not take many wives or his heart will turn astray. He must not accumulate large amounts of silver and gold.
Judges 8:30
He had many wives and seventy sons.
2 Samuel 3:2
Sons were born to David while he was in Hebron. His first son was Amnon, born to Ahinoam from Jezreel.
2 Samuel 5:13
David left Hebron and moved to Jerusalem. He married many women from Jerusalem, and he had a lot of children.
1 Kings 11:3
He had seven hundred wives, daughters of kings, and three hundred other wives. His wives influenced his heart to turn away.
1 Chronicles 3:1
These were the sons of David born to him in Hebron: The firstborn was Amnon the son of Ahinoam of Jezreel; the second, Daniel the son of Abigail of Carmel;
Song of Songs 6:8
There are sixty queens, and eighty concubines, and virgins without number.

General references

Deuteronomy 21:16
The day he wills his possessions to his sons, he should not put the firstborn son of the loved wife before the firstborn son of the unloved wife.
2 Samuel 5:13
David left Hebron and moved to Jerusalem. He married many women from Jerusalem, and he had a lot of children.
Song of Songs 6:8
There are sixty queens, and eighty concubines, and virgins without number.