This was shot and directed well and the way that Margaret's story was constructed early on was interesting. The movie is less appealing in its final act as it ushers in the arrival of the antichrist and tries to tie itself into the original Omen film. That film was made almost 50 years ago, and most modern moviegoers aren't going to appreciate the effort.
There aren't many jump scares in this, a couple of them occur early, but this doesn't really have any sustained scares, either. There are strange moments but nothing that will keep anyone from good night's sleep.