Why didn't Moshe speak to the rock?

QUESTION: Why didn't Moshe speak to the rock?

POSSIBLE ANSWER: Had Moshe spoken to the rock, HaShem would have indeed been sanctified. Every Jew would have come to the conclusion: "If a rock, which does not speak and does not hear, performs HaShem's will, how much more so are we required to listen to Him!" However, Moshe thought to himself that this logic could also be used by Satan against the Jewish people when they sinned. He would come before the heavenly tribunal as a prosecutor and say to HaShem, "Your children, the Jewish people, are even worse than an inert rock." Not wanting to give Satan any ammunition, Moshe jeopardized his life and future, and decided not to speak to the rock.

ANOTHER POSSIBLE ANSWER: Based on the Tikunei Zohar, the entire scenario was intended as a symbolic gesture to provide the people with an abundant source of Torah — which is compared to water. The rock represents Torah she’b’al peh. Had Moshe spoken to the rock, he would have released a wealth of Torah knowledge with unusual clarity, free of doubts and disputes — akin to the situation in the World to Come. As a consequence of Moshe striking the rock, however, only a scarce amount of Torah knowledge emerged; furthermore, this led to numerous doubts and disputes amongst Torah scholars concerning halacha.