The wrath of god is the pouring out of his judgement on the flesh of mankind. He judges based on facts. What man does is collected in a cup, each one contributing what he does to that cup. When the cup is full, it is tilted and the contents thereof is poured onto mankind, and they reap what they sowed into the cup. So therefore mans punishment is brought about by his own hand.
Each getting what he deserves. So therefore do unto others as you would want them to do to you. Because that is what will happen. There is a time to sow and a time to reap. Mankind cannot escape the reaping process. When mankind has filled their cup up, which happens when the time for gathering into the cup the seeds of the works done by mankind, they have moved to the event horizon of black hole, and there is no way to avoid the singularity which follows anymore than we can avoid next thursday.
So therefore what we do on this earth, and who we are determines what we reap. That goes for christians and non-christians alike.
Heneni