International Standard Version Stop being afraid of those who kill the body but can't kill the soul. Instead, be afraid of the one who can destroy both body and soul in hell.
American Standard Version And be not afraid of them that kill the body, but are not able to kill the soul: but rather fear him who is able to destroy both soul and body in hell.
Young's Literal Translation 'And be not afraid of those killing the body, and are not able to kill the soul, but fear rather Him who is able both soul and body to destroy in gehenna.