Kill the Body and the Soul?

When Matthew 10:28 is referenced:

 

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.

 

That Jesus can destroy both soul and body in Hell and that the soul can be killed are glossed over. What does that sentence mean? What does kill the soul mean? What does destroy the soul mean? Destroy usually refers to a specific point in time when something remains no more in the condition it was previously and kill refers to no longer living. How can the body (physical) get into Hell (spiritual realm) to be destroyed?