In the Sermon on the Mount, Jesus preached that people should not judge others. In addition, in His handling of the woman caught in adultery, He said, "He that is without sin among you, let him first cast a stone at her." Jesus actually had a lot more to say about judging others than just one sentence. Here is the verse in context of the other things Jesus said about judging others: "Do not judge so that you will not be judged. "For in the way you judge, you will be judged; and by your standard of measure, it will be measured to you. "Why do you look at the speck that is in your brother's eye, but do not notice the log that is in your own eye? "Or how can you say to your brother, 'Let me take the speck out of your eye,' and behold, the log is in your own eye? "You hypocrite, first take the log out of your own eye, and then you will see clearly to take the speck out of your brother's eye. (Mathew 7:1-5)
What is clear from the context is that Jesus was talking about people making personal judgments against others, when their own behavior was just as bad if not worse than the persons they were judging. Even when taken in context, the object of Jesus' statements is not readily evident in this sermon. However, in other preaching, Jesus made it clear that He especially had a problem with the hypocrisy of the religious leaders of His time. In other confrontations with them, Jesus made some pretty strong statements against those leaders: "Woe to you, scribes and Pharisees, hypocrites! For you clean the outside of the cup and of the dish, but inside they are full of robbery and self-indulgence. You blind Pharisee, first clean the inside of the cup and of the dish, so that the outside of it may become clean also. Woe to you, scribes and Pharisees, hypocrites! For you are like whitewashed tombs which on the outside appear beautiful, but inside they are full of dead men's bones and all uncleanness. So you, too, outwardly appear righteous to men, but inwardly you are full of hypocrisy and lawlessness..."
Another verse in which Jesus tells people not to judge each other is the one in which a woman was caught in adultery. (John 8: 1-11) Early in the morning He came again into the temple, and all the people were coming to Him; and He sat down and began to teach them. The scribes and the Pharisees brought a woman caught in adultery, and having set her in the center of the court, they said to Him, "Teacher, this woman has been caught in adultery, in the very act. Now in the Law Moses commanded us to stone such women; what then do You say?" They were saying this, testing Him, so that they might have grounds for accusing Him. But Jesus stooped down and with His finger wrote on the ground. But when they persisted in asking Him, He straightened up, and said to them, "He who is without sin among you, let him be the first to throw a stone at her." Again He stooped down and wrote on the ground. When they heard it, they began to go out one by one, beginning with the older ones, and He was left alone, and the woman, where she was, in the center of the court. Straightening up, Jesus said to her, "Woman, where are they? Did no one condemn you?" She said, "No one, Lord." And Jesus said, "I do not condemn you, either. Go. From now on sin no more."
Jesus warned about the danger of pointing out the faults of others. He said people with planks in their eyes should not attempt to remove specks out of other people’s eyes. He challenged His hearers to choose humility rather than hypocrisy by always applying the truth to themselves before noting the faults in others........Amen