Final answer:
The claim that all 613 mitzvot can be performed today is false. Many mitzvot are tied to the existence of the Temple in Jerusalem and cannot be observed without it. While ethical and personal mitzvot are still practiced, others are not applicable in the absence of the Temple and the Sanhedrin.
Step-by-step explanation:
The statement that All 613 mitzvot can be performed today is false. The Jewish tradition teaches that there are 613 commandments, known as mitzvot, many of which are related to the times of the Temple in Jerusalem and the priestly classes. As the Temple currently does not exist, several of these commandments are related to its service and therefore cannot be performed in the present day.
For example, there are mitzvot that involve the offering of sacrifices, which can only be done in the Temple. Additionally, some commandments are related to the functioning of the Sanhedrin, the ancient Jewish court system, which are also not applicable today. There are quite a number of other mitzvot that are associated with the agricultural practices of the Land of Israel, and those too are not applicable to Jews living outside of Israel. Consequently, while many of the ethical and personal conduct mitzvot can be observed today, a significant portion of the 613 commandments cannot be fully practiced until the Temple is rebuilt.