Why be good?

[Huggy Bear]

I think you're mistaken, no one said anything about him telling you, you just "know" this particular man has these thoughts, it's a hypothetical scenario.

You're missing the point.  Unless he acts or tells you, you would never just know.  So?  Do you want to know?  How the condemnation.

What part of "hypothetical" don't you understand? Jesus would know what in the heart without being told right? Pretend you had the same ability. You claim that to "Condemn a man in advance of his actions and you behave immorally yourself", Yet that's exactly what you do when you say you wouldn't trust this person around kids because of his thoughts.

And is it a sin to have small pox?

Seriously? no.
Were speaking in a medical context, sin is used in a spiritual context. A building can be "condemned", doesn't mean it's "sinful".