HS.
It was Jesus who called the Pharisees hypocrites and offspring of vipors. These where the religious leaders of the day, not the average person. And they recieved such strong condemnation because they claimed to represent God to the people but dealt with them in such a harsh and merciless way. That is why Jesus was so strong in dealing with them.
Jesus never did this to those who were just not interested in his message.
I believe we Christians today if modeling Jesus Christ, our exempler, should also keep a mild and kind spirit when dealing with non believers. But in dealing with those who claim to be Christians but prove they are false by their actions, they should get a severe tongue lashing and believe me, I have given one more than once. Like I said, I am much harder on my fellow believers than on non-believers.
So you see, there is a difference in what Jesus did because of whom he was actually addressing. Hope this clears things up. Peace, Lilly