I think you show your spirituality in day to day things, what is important in your life. For example someone could profess to be really spiritual, answering up, pioneering etc but we don't know what they do it their own homes or they are doing it, in part, for recognition and praise.

Therefore i think they to know if someone is really spiritual you need to talk to them, be around them and see how they react to situations that arise in their lives.

If they do something you dont like you can either talk to them about it, there may be a reason, or cut yourself off from them

Its one big learning curve i think we've all been through it and are still on it, see for yourselves what people are, dont judge them on other peoples opinions

But remember most importantly not to look for splinters, where you have your very own rafters!