Not If... But When - Parshas Yisro 5786 At the end of the parsha, immediately after the Ten Commandments, the Torah states: “And if [אם] you make Me an altar of stone, you shall not build it of hewn stones.” (Shemos 20:22). At first glance, this verse is puzzling. The construction of an altar is a clear commandment, not an optional act (see Devarim 27:6). Yet the Torah uses the word אם , which ordinarily means “if”  — implying choice rather than obligation. Why would the Tor