what makes a person truly spiritual? that's a hard one to tell without really knowing the person. love for Jehovah and neighbor, displaying the fruitages of the spirit (or at least trying to), and doing the best one can to worship Jehovah. these are things that can be obviously seen by other people, sometimes, but other times, it's very hard to see these qualities unless you know the person very well.
i agree with that to a T. you definitely have to get to know somebody to find out why they are the way they are.