They journeyed from Rephidim, and they arrived in the desert of Sinai, and they encamped in the desert, and Israel (Vayichan – Singular) encamped there opposite the mountain. (Shemos 19:2)

and Israel encamped there: וַיִחַן, [the singular form, denoting that they encamped there] as one man with one heart, but all the other encampments were [divided] with complaints and with strife. — Rashi

And Moshe spoke before HASHEM saying, “They, the Children of Israel will not listen to me and how will Pharaoh listen to me, and I am of uncircumcised lips. (Shemos 6:12)

Why does Moshe go backwards to the old excuse of the speech impediment? That was clarified by the burning bush. Also, his argument seems strong enough that he feels that the Children of Israel won’t listen and how much more so Pharaoh. Why does it matter after that that he has a speech impediment?

There is no question that Moshe was our greatest teacher. He goes down in history with the title “Rabbeinu”. He is our teacher. All the Torah for all generations traces back to him. Yet, there is a greater teacher we can learn from. The word “Torah” means teaching. That’s what the Torah does. It teaches. It is “Toras HASHEM”- the Torah of HASHEM! HASHEM is our greatest teacher, in fact and we can learn from the way He teaches.

A lesson plan is always the key to great teaching. One of the key ingredients of that plan is something called an anticipatory set. It is meant to whet the appetite of the student and awaken an interest in learning. Without that, the student is not a vessel to receive. All the great lecturing in the world will not accomplish a thing until the student is a willing participant. Since a person has free will, this can present a great challenge.

Often, if not always, a good teacher must create a teachable moment. To catch the interest of a class, I launched a few shocking statements that needed, of course, to be qualified. “Today we will learn how to speak Loshon Hora! The Torah permits killing, breaking Shabbos, and eating non-Kosher food!”

One student said, “Now, tell us! Tell us please!” We went on to explain that in certain circumstances only and under certain conditions one might or must either kill, violate Shabbos, eat non-Kosher food to save a life, and under certain conditions to speak Loshon Hora. We went on to learn those conditions and the lesson filled that void the anticipatory set created. The students were thirsty and receptive for an answer – so the lesson was gladly received.

The Sefas Emes offers the following amazing insight on the verse. He explains that it is “Because the Children of Israel will not listen” and therefore he was of uncircumcised lips…Speech is in exile as long as the recipients are not ready to hear the word of HASHEM…” He goes on to explain that to the extent that the listener is unavailable, the words are hidden. The more ready the recipients are, the more open and revealed is the message.

Sometimes even when you desperately want to tell somebody something, if they are not ready to hear, then the message will feel like it is being blocked by the listener, and even the most articulate speaker can become a stammerer, a stutterer.

The greatest proof of this we find by Mount Sinai when the entire Nation of Israel camped, in a singular fashion, as Rashi describes “like one person, with one heart”. It was then that HASHEM Himself broke a 2448- year, 26 generation silence. When “the student” was really ready that’s when “The Teacher appeared” and declared, “I am HASHEM…”

After the incredible exhibition of the exodus, including ten plagues and the splitting of the sea, and after the 49-day journey to Mount Sinai, munching on miraculous Mann along the way, the Jewish People were ready. All of what had preceded that moment in history was a grandiose anticipatory set.

There is an eastern notion that always rang true with me, and I believe that this is the Torah source for that notion, “When the student is ready the teacher appears.” I always wondered where the teacher goes until the students are ready. Now we understand that it’s the teacher’s job to create a teachable moment, to patiently prepare and wait for that magic moment when the student is ready.