Revelations 3:20 "Behold, I stand at the door and knock. If anyone hears my voice and opens the door, [then] I will enter his house and dine with him, and him with me." Genesis 3:10 "He answered, 'I heard you in the garden; but I was afraid, because I was naked, so I hid myself .'"
I swear to you guys, when I'm an adult and have found my perfect guy (who looks like or nearly like Loki or Tom or Ben or Sherlock) and we have kids, this will be exactly what I will do when they're afraid of ghost. This and tell them that The Doctor brings their Christmas presents in his TARDIS!