Genesis 14:4 in the King James Version
Twelve years they served Chedorlaomer, and in the thirteenth year they rebelled.
Context
3 All these joined together in the valley of Siddim (also called the Salt Sea).
4 They served Chedorlaomer for twelve years, and in the thirteenth year they rebelled.
5 In the fourteenth year Chedorlaomer and the kings who were with him came and struck the Rephaim in Ashteroth Karnaim, the Zuzim in Ham, the Emim in Shaveh Kiriathaim,