Parshat Kedoshim is one of several that tries to instill “Jewish Values”, one of which is the commandment not to steal. In an effort to drive home the point, the Torah uses several terms that seem redundant, when it says “Do not steal, do not deny falsely, and do not lie to one another” (19:11). Other than making sure we get the point, what is the significance of these specific forms of honesty being listed?
The Gemara in Makot (24a) sheds some light by saying that the Torah is telling us to speak the truth in our hearts, like Rav Safra did. The Gemara goes on to tell the story of Rav Safra who was davening (praying) when someone came to buy something from him. When Rav Safra didn’t respond because he was praying, the buyer raised his price several times, until finally Rav Safra finished praying and responded. Rav Safra insisted on selling the object at his original price, even though the man offered more because in his heart Rav Safra agreed to the first price.
The Torah is driving home that we should not steal in actions or words. That means not manipulating people to get what you desire, not distorting words to fit your opinion, and not frivolously demanding from others. If we live by these Torah values, we’ll hopefully fully value them.