Matthew 10:28, 32-33, 39

And do not fear those who kill the body but cannot kill the soul. Rather fear him who can destroy both soul and body in hell.

So everyone who acknowledges me before men, I also will acknowledge before my Father who is in heaven, but whoever denies me before men, I also will deny before my Father who is in heaven.

Whoever finds his life will lose it, and whoever loses his life for my sake will find it.