Genesis 25:16
These are the sons of Ishmael and these are their names, by their villages, and by their camps: twelve leaders according to their tribes.
Genesis 17:20
Concerning Ishmael, I have heard you: I will surely bless him. I will make him fruitful and will greatly increase his numbers. He will be the father of twelve rulers, and I will make him into a great nation.
Genesis 17:23
On that very day Abraham took his son Ishmael and all those born in his household or bought with his money, every male in his household, and circumcised them, as God told 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
Concerning Ishmael, I have heard you: I will surely bless him. I will make him fruitful and will greatly increase his numbers. He will be the father of twelve rulers, and I will make him into a great nation.