Words are Precious

Words are Precious:
The pasuk states that Moshe said (Shemos 6:12): “And I am aral sefasayim.” Targum Onkelos translates this to mean: “I am heavy (yakir) of speech.” Rav Bunim of Peshischa zy”a explains that the word “yakir” can also mean “precious”. Thus, Moshe was saying that every word was precious to him, so he spoke very little.