At the beginning of this week's Parsha, the Torah lists all the Shevatim (tribes), but they are not listed in chronological order. First are the six children of Leah, followed by Binyamin (who was supposed to be last); then Dan, Naftali, Gad, and Asher are mentioned, and the last (but not least) one is Yosef. Rabbeinu Bachye explains that even though Yosef was the viceroy of Egypt, and all the tribes bowed to him, Yosef was very humble.
We also find later in the Parsha, when Hashem reveals Himself for the first time to Moshe Rabbeinu and tells them that he will be the redeemer. Moshe replied, "Who am I to do all this?" So, Hashem answers Moshe, "I will be with you, and you will serve Me on this Mountain." How does the answer fit the question?
Our Rabbis tell us that Hashem was communicating to Moshe that when he asked who he was, this was a giveaway to his humility that Hashem loves. Moshe was the humblest man who had ever lived, as the Torah testifies. So, Moshe was destined to take the Jews out of Egypt and take the Jewish nation to receive the Torah on the humblest of mountains, Har Sinai. We see this idea in the Gemara (Avodah Zara 20b) when Rav Pinchas Ben Yair tells us about the various human attributes and ends that humility is greater than all the rest. The Iggeres HaRamban tells us humility is better than all the traits. We should take the message to heart and learn to humble ourselves.