Luke 12:1-3

In the meantime, after so many thousands of the people had gathered that they were stepping on one another, Jesus began speaking first of all to His disciples, “Be continually on your guard against the leaven of the Pharisees [that is, their pervasive, corrupting influence and teaching], which is hypocrisy [producing self-righteousness]. But there is nothing [so carefully] concealed that it will not be revealed, nor so hidden that it will not be made known. [Matt 10:26-33; Mark 4:22] For that reason, whatever you have said in the dark will be heard in the light, and what you have whispered behind closed doors will be proclaimed on the housetops.