The concept is to believe you are eternal beings. There's no need for hostilities. No need to fear.
14 Since the children have flesh and blood,he too shared in their humanityso that by his death he might break the powerof him who holds the power of death—that is, the devil—15 and free those who all their lives were held in slavery by their fearof death.
But try believing that as you wake up each morning. There's too much other stuff to do. No one goes, so no one knows. And then you just go! Gone!