Moshe said to Hashem, “…I am not a man of words…for I am heavy of mouth and heavy of speech.” (4:10)
Rashi teaches us that for seven days Hashem spoke to Moshe, attempting to convince him to go to Egypt and instruct Pharaoh to permit the Jews to leave his country. Seven days is a long time, especially when Hashem is talking. Moshe refused; he felt he was not worthy, because he had a speech impediment. How could he speak to Pharaoh if he had difficulty communicating orally? Moshe Rabbeinu used this excuse for seven days until Hashem finally became angry with him. Hashem said, “I will be with you, so you have nothing to worry about.” Yet, Moshe did not want…