Sir,
The very popular verse with the Lost Man for you error he is Matt. 7:1 but there is a rule in Hermeneutics that is applied, first, by any serious Christian. This rule goes something like, not a quote, ¨No single scripture nor can any single portion of scripture be understood without the light of all other scripture shining on it.¨ From this there is much to learn. In this case it makes your, ¨shame on you,¨ completely out of place and incorrect.
Verses 1-6 of this passage form a paragraph in todays writing styles meaning that no less than all six verses are strung together to make a single thought. The context, and we must always grasp the context of anything we read, is that the follower of Jesus, the Christ must judge and that he or she must judge in the same manor they wish to be judged. You see, it is not our LORD you follow when you make this statement but rather the Devil.
I feel you must first know someone before you can judge them, especially when it comes to one's standing in their own faith. That's what I was getting at. And besides, I have seen the response from the poster whose post prompted the response you noted. It's done.