Some people, despite their shallow understanding, pretend staunch faith and speak contemptuously to their fellow believers, thus often disrupting the faith of others.

Daily Wisdom

From the Writings of Nichiren Daishonin
Thursday, May 15, 2014:

 

There are a few in this province of Kai who have expressed their desire to take faith. Yet I make it a rule not to permit them to join us unless they remain steadfast in their resolve. Some people, despite their shallow understanding, pretend staunch faith and speak contemptuously to their fellow believers, thus often disrupting the faith of others.