613 mitzvot (commandments).

It is based primarily on the list compiled by Rambam in the Mishneh Torah.

The Jewish People are enjoined to observe the 613 Divine commencement inscribed in the holy Torah, but with the destruction of the Beith HaMikdash and the dispersion of the Nation, observance of many of the mitzvaoth has become impossible.  In righteous modern Jew who wish to fulfill his obligations to his Creator would have great difficulty in deciding which Torah commandments pertain today and which do not.