If you are looking to have a Bible Study on judging others, here are materials that you might find helpful, some in my books, blogs, and other resources online. My books quote a great deal directly from the Bible, so that might help you find what you need:
In my book “The Importance of Christian Friendships“, the relevant chapter on judging others is Chapter 1 (“Christian Friends are Understanding, Not Judgmental”).
In my book “Finding Freedom in God’s Promises, the relevant chapter on judging others is Chapter 1 (“Letting God be the Judge”).
For interesting Christian blogs and articles on judging others, go to All About God and CBN News.
For Bible references to judging others, go to Bible Study Tools.
For interesting quotes on judging others, see Wise Old Sayings.