You may possess both this and the future world

Rabbinical Judaism believes that two Torahs were
given to Moses at that time: the written Torah and
 the oral Torah (in Kabbalistic traditions
 there is even a third or `hidden´ Torah as revealed in the Zohar)

Perhaps one biggerst by least commands is not heritages of cristian. Rabbi Hillel, one of the most influential scholars in Jewish history, said once.
There were a gentile, who came before Shammai, and said to Hillel:

Convert me on the condition that you teach me the whole Torah while I stand on one foot.

Shammai pushed him aside with the measuring stick he was holding.
The same fellow came before Hillel, and Hillel converted him, saying:

That which is despicable to you, do not do to your fellow, this is the whole Torah, and the rest is commentary, go and learn it.

Unfortunately this command is long for with time of degeneration and secularation understood only through the Jews as an internal command. While it has been one universal learning ever.

Hillel considered love of man the kernel of Jewish teaching.
It was not `love of each others´, As it was understood later. We do not find any indication from the races by Hillel, especially the privileged.
One Hillel´s precept was that one should not separate oneself from the community
When theosophists waffled still human breeds, Rudolf Steiner said that the races do not exist anymore. And likewise said Jan van Rijckenborgh.

Races and nationalism is teh biggest curse of humankind, It is a curse not only `to pay the army´, such as Carl G.  Mannerheim said, it brings the whole of thinking about race and nation-states, and separate religions. Parallel to the same conclusion was come to the Dalai Lama, when I listened to him in August.

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