From the Chassidic Masters

Twice Moses states in our Parshah that "there is none else"--that nothing exists aside from G-d. Are these just words, or do they mean something that we can understand?

How does one restore the Divine unity to our fragmented world? By delving even further into its plurality. An essay based on the famed Chassidic discourse Heichaltzu 5659 by Rabbi Shalom DovBer of Lubavitch, which explores the significance of what may well be the most important word in Judaism -- Echad ("one")

If Moses would have crossed the Jordan, that would have been the end: the end of the struggle, the end of history...