Stop, it is among the first words we teach our children. How often have I had to repeat it several times before one of my children would listen. Adults sometimes won't listen either and perhaps that is why they put up this forceful sign. Jesus had to use hard language to teach hard hearts; this passage from the book of Matthew is a good example: Mat 23:27 "Woe to you, scribes and Pharisees, hypocrites! For you are like whitewashed tombs, which outwardly appear beautiful, but within are full of dead people's bones and all uncleanness.
Mat 23:28 So you also outwardly appear righteous to others, but within you are full of hypocrisy and lawlessness.
Mat 23:29 "Woe to you, scribes and Pharisees, hypocrites! For you build the tombs of the prophets and decorate the monuments of the righteous,
Mat 23:30 saying, 'If we had lived in the days of our fathers, we would not have taken part with them in shedding the blood of the prophets.'
Mat 23:31 Thus you witness against yourselves that you are sons of those who murdered the prophets.
Mat 23:32 Fill up, then, the measure of your fathers.
Mat 23:33 You serpents, you brood of vipers, how are you to escape being sentenced to hell?
Mat 23:34 Therefore I send you prophets and wise men and scribes, some of whom you will kill and crucify, and some you will flog in your synagogues and persecute from town to town,
Mat 23:35 so that on you may come all the righteous blood shed on earth, from the blood of innocent Abel to the blood of Zechariah the son of Barachiah, whom you murdered between the sanctuary and the altar.
Mat 23:36 Truly, I say to you, all these things will come upon this generation.
English Standard Version
God had sent prophets, wise men and scribes and they were rejected, so as a last resort HE sent Jesus to teach them. They needed to STOP placing emphasis on the externals of religion and START changing inwardly! If you have ever looked in the mirror and realized the word hypocrite could apply to you in any way.... then you just stopped. Now start over again and proceed with caution, PLEEEASE!