Matthew 10:28, 32-33, 39

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.

Every one therefore who shall confess me before men, him will I also confess before my Father who is in heaven. But whosoever shall deny me before men, him will I also deny before my Father who is in heaven.

He that findeth his life shall lose it; and he that loseth his life for my sake shall find it.