 It's for that reason alone that it imbues the symbol of the cross with the power because we're reminded of the death and resurrection of Jesus. So to make the sign of the cross, it's not superstition. It's not some Catholic hocus-pocus or anything. It's visibly reminding ourselves, but also reminding all the demons who may be in the vicinity, as well as any people who might see this, like when you make the sign of the cross when you say grace before a meal in a restaurant.