There seems to be some confusion on this topic. Does the Bible really say not to judge one another? I don’t think the Bible says that at all. We can find passages where the early Church was told by Paul to judge one another:
The early Church had difficulties with sinners intermingling with believers and Paul told the Corinthian Church to put away people who were unrepentant sinners:
1 Corinthians 5:11-13 King James Version (KJV)
11 But now I have written unto you not to keep company, if any man that is called a brother be a fornicator, or covetous, or an idolator, or a railer, or a drunkard, or an extortioner; with such an one no not to eat.
12 For what have I to do to judge them also that are without? do not ye judge them that are within?
13 But them that are without God judgeth. Therefore put away from among yourselves that wicked person.
Even the passage that says judge not lest ye be judged, we find the principle that we are to remove the log out of our own eye then remove the speck from our brother’s eye. This means that we are to remove the speck from our brother’s eye but do not do so in a hypocritical manner.