Luke 12:4-5

4 "I tell you, my friends, do not be afraid of those who kill the body and after that can do no more. 5 But I will show you whom you should fear: Fear him who, after the killing of the body, has power to throw you into hell. Yes, I tell you, fear him.

Matthew 10:28 KJV
King James Version
And fear not them which kill the body, but are not able to kill the soul: but rather fear him which is able to destroy both soul and body in hell.