Strong H3581B כֹּחַ kôach kôach · strength

Genesis

1. Genesis 4:12
   When thou tillest the ground, it shall not henceforth yield unto thee her strength; a fugitive and a vagabond shalt thou be in the earth.
2. Genesis 31:6
   And ye know that with all my power I have served your father.
3. Genesis 49:3
   Reuben, thou art my firstborn, my might, and the beginning of my strength, the excellency of dignity, and the excellency of power: