'Twelve' in the Bible

They were subject to Chedorlaomer for twelve years, but they rebelled in the thirteenth year.

And as for Ishmael, I've heard you. I'll bless him, and he'll have many descendants. I will multiply him greatly, he'll father twelve tribal leaders, and I'll cause his descendants to become a great nation.

These were Ishmael's children, listed by their names according to their villages and their camps. There were a total of twelve tribal chiefs, according to their clans.

But while Israel lived in that land, Reuben went inside his father's tent and had sexual relations with his father's concubine Bilhah, and Israel heard about it. Now Jacob had twelve sons.

"But your majesty," they pleaded, "your servants include twelve brothers, the sons of a common father back in the land of Canaan. Please! Our youngest brother remains with our father, and the other one is no longer alive."

Our father has twelve sons, but one of us isn't alive anymore, and our youngest brother is with our father today back home in Canaan.'

That's how Israel blessed these twelve tribes of Israel, and this is what their father told them when he pronounced his blessing for them, blessing each one with a blessing suitable for them.