Genesis 25:16

These are the sons of Ishmael, and these are their names, in their hamlets and their encampments twelve princes of their peoples.

Genesis 17:20

And for Ishmael I have heard thee: behold, I will bless him, and will make him fruitful, and will very greatly multiply him; twelve princes shall he beget, and I will make him a great nation.

Genesis 17:23

And Abraham took Ishmael his son, and all who were born in his house, and all who were bought with his money every male among the people of Abraham's house and circumcised the flesh of their foreskin on that same day, as God had said to him.

Treasury of Scripture Knowledge

Summary

These are the sons of Ishmael, and these are their names, by their towns, and by their castles; twelve princes according to their nations.

Twelve

Bible References

Twelve

Genesis 17:20
And for Ishmael I have heard thee: behold, I will bless him, and will make him fruitful, and will very greatly multiply him; twelve princes shall he beget, and I will make him a great nation.