So let's test this statement of yours, shall we?

You witness a homeless person ask me for some food.  In reply I spit on him and say "Get a job you bum!" Would you say "Well, gee wiz, we mustn't judge! Leave it to God to sort out. Only God can judge who is in sin."

You witness me change the oil in my car.  I take the used oil and dump it down the sewer.  Would you say "Well, gee wiz, we mustn't judge.  Pope Francis wants a welcoming Church you know, peace, love and tolerance, you know!"

Finally, you witness me tell people that we don't need to worry about caring for the environment. The Global Warming is a farce, Pope Francis is a nut.  Would you say "Well, gee wiz, we mustn't judge.  Peace, love and tolerance you know!  Let God sort it out!"