The Earth is warming due to human activities. That warming presents a threat. We can deal with it or we can ignore it. Your call.
No, no it's not. You can repeat your "CHRIST IS COMING" bullcrap all you want, but just like they have been warning us for thousands of years that he is coming, so too are your pronouncements that man is causing global warming.
They have the same amount of empirical evidence to support them.