Moshe Rabeinu told the people “Atem hadveikim hayom…”—“ you are clinging today to Hashem you G-d, all of you are living today”. The upshot of this is that through clinging to G-d we are able to a reach a different stage in our lives – chaim nitzchiim – an everlasting life where there is no interruption.
This needs to be explained for we can easily observe that fulfilling the mitzvos and learning Torah don’t stop people from eventually dying. Even the complete tzaddikim whose lives are completely dedicated to and centered on the Torah also pass on. So what is the meaning of “all of you are living today”?
We can view life from two perspectives. On the one hand, life begins at some point, continues, and terminates. One the other hand, life continues but at some point there is a separation between the body and the life process. In other words, life continues but temporarily there is a separation between it and the body.
In other words, the life of a Jew is not limited or measured in any way, it’s a life that is not susceptible to interruptions and the phenomenon of dying is entirely a side issue.
Therefore when this decree is repealed, Jews will return to life in this physical world. This is of course the era of the Resurrection of the Dead and the eternality of life at that time will be derived from the advantage of living in this physical world.
Based on Toras Menachem vol. 31, p. 190