At around 55 mins Matt enters the bedroom with nothing in his hands. Moments later he has his phone in his hand showing it to Quinn.
When Evan is first seen, his face has no lacerations. Just before his surgery, he looks like his face has been badly beaten. When Quinn looks at his dead body, the contusions have disappeared.
When Evan is killed in the stairwell, his phone lands on the stairs below, face-up and unbroken. In the morgue, when Quinn takes his phone to his dead body, its screen is now badly cracked.
At 5 min in when Courtney is walking, and thinks she's being followed and there's a long straight street behind her. Cut to looking ahead her direction, there's trash cans then cut back to seeing behind her and apparently the street has curved as if she's turned a corner But her POV walking hasn't changed.
##Spoilers##
Quin is given an injection in the arm to revive her after death. Since her heart would have stopped upon death her circulatory system would no longer work. Therefore, anything injected after death would remain at the injection point and never reach the vital organs to revive them.
Father John states that there are 27 books in the Bible. In fact, there are 27 books in the New Testament, but the Old Testament has 39 books, bringing the Bible's complete total to 66 books overall.