1 Kings 11:3

He had seven hundred wives, princesses, and three hundred concubines, and his wives turned his heart away [from God].

2 Samuel 5:13-16

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

Judges 8:30-31

Now Gideon had seventy sons born to him, because he had many wives.

Judges 9:5

Then he went to his father’s house at Ophrah and murdered his brothers the sons of Jerubbaal, seventy men, [in a public execution] on one stone. But Jotham the youngest son of Jerubbaal was left alive, because he had hidden himself.

2 Samuel 3:2-5

Sons were born to David in Hebron: his firstborn was Amnon, by Ahinoam of Jezreel;

2 Chronicles 11:21

Rehoboam loved Maacah the daughter (granddaughter) of Absalom more than all his wives and concubines—for he had taken eighteen wives and sixty concubines, and he fathered twenty-eight sons and sixty daughters.

Ecclesiastes 7:28

which I am still seeking but have not found. I have found one man among a thousand [who pleases God], but I have not found [such] a woman among all these [a thousand in my harem].

Treasury of Scripture Knowledge

Summary

And he had seven hundred wives, princesses, and three hundred concubines: and his wives turned away his heart.

General references

Bible References

Seven hundred

Judges 8:30
Now Gideon had seventy sons born to him, because he had many wives.
Judges 9:5
Then he went to his father’s house at Ophrah and murdered his brothers the sons of Jerubbaal, seventy men, [in a public execution] on one stone. But Jotham the youngest son of Jerubbaal was left alive, because he had hidden himself.
2 Samuel 3:2
Sons were born to David in Hebron: his firstborn was Amnon, by Ahinoam of Jezreel;
2 Samuel 5:13
David took more concubines and wives from Jerusalem, after he came from Hebron; and more sons and daughters were born to him.
2 Chronicles 11:21
Rehoboam loved Maacah the daughter (granddaughter) of Absalom more than all his wives and concubines—for he had taken eighteen wives and sixty concubines, and he fathered twenty-eight sons and sixty daughters.
Ecclesiastes 7:28
which I am still seeking but have not found. I have found one man among a thousand [who pleases God], but I have not found [such] a woman among all these [a thousand in my harem].

General references

Exodus 34:16
and you might take some of his daughters for your sons, and his daughters would play the prostitute with their gods and cause your sons also to play the prostitute (commit apostasy) with their gods [that is, abandon the true God for man-made idols].
Judges 3:6
and they took their daughters for themselves as wives and gave their own daughters to their sons, and served their [pagan] gods.