Today is Halloween—the day where it’s all of a sudden acceptable to encourage your kids to stay out after dark and take candy from strangers. I grew up in a conservative, southern Baptist home, so I never really celebrated Halloween. I attended a handful of fall festivals in my childhood years, but I never went trick or treating, or walked through haunted houses, or decorated with spiderwebs and tombstones.

However, I once saw a Halloween decoration that I think my parents could get on board with. It was an outdoor sign made of different pieces of wood that were all painted in a variety of fall colors, and it read, “The only ghost that lives in this house is the Holy Ghost.”

The Holy Ghost, aka the Holy Spirit, can sometimes be a mystery to many believers. Who exactly is the Holy Spirit, and what exactly does He do in the world and in our daily, personal lives? Well, gang, it’s time to hop in the Mystery Machine and grab your Scooby Snacks because we’re about to discover that this Ghost is not as mysterious or daunting as He may seem.