Imagine a die with 100,000 sides. You get one roll. Would you bet your life on landing on 56,433? And yet, you seem to be willing to bet your eternal life that you indeed have the Spirit and the truth, even though thousands upon thousands of other persons claim think that they too have the Spirit and the truth, and yet disagree with you.
-A8
Let's be even clearer. Millions of people have been killed and many more probably will be killed by people who are doing nothing more than following the dictates of a "spirit" that visited Muhammad in a cave.
I'd rather you not judge me at all, but if you must then my preference would be for you to judge me on the basis laid out by Jesus Christ in Matthew 7, and further specified in Galatians 5:
But the fruit of the Spirit is love, joy, peace, longsuffering, gentleness, goodness, faith, Meekness, temperance: against such there is no law. - Galatians 5:22-23