Q. Of the five oral tools from which speech emerges, throat, palate, teeth, tongue, lips, why is it that in the 24 Books speech is most often referred to in association with the tongue and the lips?
A. Horav Shlomo Miller’s Shlit’a opinion is that the choice of tongue and lips to describe and represent speech over the other three body parts that are instrumental in voice creation, is due to the fact that they are the ones easily visible and seen by the eye, and therefore identified as such.
Rabbi A. Bartfeld as revised by Horav Shlomo Miller Shlit’a