'Twelve' in the Bible

And Jehoram, the son of Ahab, became king over Israel in Samaria in the eighteenth year of the rule of Jehoshaphat, king of Judah; and he was king for twelve years.

He put to the sword twelve thousand men of Edom in the Valley of Salt, and took Sela in war, naming it Joktheel, as it is to this day.

Manasseh was twelve years old when he became king; for fifty-five years he was ruling in Jerusalem; and his mother's name was Hephzi-bah.

And he put an end to the false priests, who had been put in their positions by the kings of Judah to see to the burning of offerings in the high places in the towns of Judah and the outskirts of Jerusalem, and all those who made offerings to Baal and to the sun and the moon and the twelve signs and all the stars of heaven.