I've lost count of the number of people I know who have been murdered. Everyone I know has been car jacked at least once, had violent home invasion robberies, etc. I'm sure 80% of the population has some form of PTSD.
We can deny our angels exist, convince ourselves they can't be real, but they show up anyway, at strange places, and at strange times. They can speak through any character we can imagine. They'll shout through demons if they have to, daring us. Challenging us to fight.