Fruits

By them you will know who they are.


Do you get figs from thistles or grapes from thorns? (matthew 7-16)

http://bible.cc/matthew/7-16.htm

You will know who they are by what they produce. If they produce envy, strife, bitterness, rancor, hatred, resentment, vindictiveness, meanness, arrogance, vituperativeness, their heart isn't in Christ. If they produce love, joy, patience, peace, longsuffering and those things called "Fruits" of the Holy Spirit-they are in the Holy Spirit.

Another reason James said Faith without works is "dead." Another reason mere "lipservice" isn't going to cut it. You have to get out there and do real good. Really.