Movies about satanic cults and the chosen victims?

I was very much entertained by Devil's Due.

This movie also gave me a thirst to see more horror stories about secret societies and satanic cults that have chosen their victims long before anything starts to happen, probably already when the victim is born.

The unknowing victims just live their ordinary life, go to work, get married and start to plan having a family... But then something horrible and unspeakable, unfathomable starts to happen. And nobody can help them, because what happens to them, doesn't even exist officially, in the reality that they themselves used to be part of...

I think this is one the most scary initial settings for a horror film. Please, if you know horror movies or thrillers with this kind of plot, let me know! I'd love to see more films like this!

P.S. I've read that there actually are people in the US that believe in the existence of such satanic cults. They believe there are hundreds of babies and adults per year who disappear without a trace, and become victims of these satanic cultists in their rituals. Well, they haven't found evidence for these speculations.