Jesus teaches about judging others in Matthew Chapter 7:1-5.

When I first got into ministry, the most popular bible verse was John 3:16

And now and for quite some time the most famous verse is Matthew 7:1 Do not judge… and no other part of the verse is used.

That is because we have gotten to the point where think we are so good and so special that no one has the right to tell us anything that does not match what we are thinking.