1 Kings 11:3

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

2 Samuel 5:13-16

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

Judges 8:30-31

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

Judges 9:5

Then he went to his father’s house at Ophrah and killed his brothers the sons of Jerubbaal, seventy men, on one stone. But Jotham the youngest son of Jerubbaal was left, for he hid himself.

2 Samuel 3:2-5

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

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.

Ecclesiastes 7:28

which I am still seeking but have not found. I have found one man among a thousand, but I have not found a woman among all these.

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 who were his direct descendants, for he had many wives.
Judges 9:5
Then he went to his father’s house at Ophrah and killed his brothers the sons of Jerubbaal, seventy men, on one stone. But Jotham the youngest son of Jerubbaal was left, for he hid himself.
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.
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.
Ecclesiastes 7:28
which I am still seeking but have not found. I have found one man among a thousand, but I have not found a woman among all these.

General references

Exodus 34:16
and you might take some of his daughters for your sons, and his daughters might play the harlot with their gods and cause your sons also to play the harlot with their gods.
Judges 3:6
and they took their daughters for themselves as wives, and gave their own daughters to their sons, and served their gods.