Wow.. I guess this thread has been "resurrected" since 2014!... I noted with some interest a few of my Baha'i friends namely Bruce and Susan participated. The only thing that I have to offer is that it appears to me that the theme of Moses as a liberator from the oppression of Egypt is an important one and served as a symbol of liberation from oppression. Once the tribes of Israel proceeded through the wilderness they became more united and were better able to deal with surviving in a desert of tribal warfare and survived at the time.
Finding the Promised Land was another milestone for the development of the nation of Israel but for many years tribal issues had to be dealt with. As Baha'is we accept the Prophet hood of Moses and the Covenant He established with the tribes of Israel... Here is a summary of the story of Moses the words of Abdul-Baha:
"The children of Israel were in bondage and captivity in the land of Egypt four hundred years. They were in an extreme state of degradation and slavery under the tyranny and oppression of the Egyptians. While they were in the condition of abject poverty, in the lowest degree of abasement, ignorance and servility His Holiness Moses suddenly appeared among them. Although He was but a shepherd, such majesty, grandeur and efficiency became manifest in Him through the power of religion, that His influence continues to this day. His prophethood was established throughout the land and the law of His Word became the foundation of the laws of the nations. This unique personage, single and alone, rescued the children of Israel from bondage through the power of religious training and discipline. He led them to the Holy Land and founded there a great civilization which has become permanent and renowned and under which these people attained the highest degree of honor and glory. He freed them from bondage and captivity. He imbued them with qualities of progressiveness and capability."
(Abdu'l-Baha, Baha'i World Faith - Abdu'l-Baha Section, p. 271)