It's not my interpretation, the whole chapter is about salvation through faith. The context of death here is clearly about what happens after you die not causing your death.
You also have to remember the chapter mentions all these sins that are "worthy of death"
envy, murder, strife, deceit, craftiness, they are gossips, slanderers, God-haters, insolent, haughty, boastful, inventors of evil, rebellious toward parents, foolish, faithless, heartless, ruthless.
Are you asking what is stopping a crazy person from trying to murder all the people who gossip?