1 Corinthians 14:8

8 For if the trumpet gave an uncertain sound, who would prepare himself for war? 

Hebrews 2:14-15

14 Since then the children have shared in flesh and blood, he also himself in like manner partook of the same, that through death he might bring to nothing him who had the power of death, that is, the devil,  15 and might deliver all of them who through fear of death were all their lifetime subject to bondage.