No you dont.. once someone speaks a word it is up to the listener to receive it or deny it, its between them and God.
Remember Jonah... He never went to argue with the people, he didnt even want to tell them, yet once He spoke what God said with his bad attutude, a whole town was spared.
Jon 4:10 Then said the LORD, Thou hast had pity on the gourd, for the which thou hast not laboured, neither madest it grow; which came up in a night, and perished in a night:
Jon 4:11 And should not I spare Nineveh, that great city, wherein are more than sixscore thousand persons that cannot discern between their right hand and their left hand; and also much cattle?