These words sum up us Jews and who we are succinctly. “Even today, affirming our covenant with G‑d by resolving to study His Torah and perform His commandments immediately, spontaneously, and automatically unites us with every Jew in the world. It also unites us with every generation of the Jewish people – past, present, and future. We thus benefit from the support of all Jews in all generations in our resolve.
We may be the smallest of nations, but when it comes to issues involving the Torah, the commandments, or fulfilling our broader Divine mission – to transform the world into G‑d’s home – we need not fear being outnumbered. We stand together with the merits of all the generations of the Jewish people.1 Likutei Sichot, vol. 19, p. 273.
Moses told the Jewish people that G‑d was sealing His covenant not only with them but with all generations of Jews.
[Moses told the Jewish people that G‑d was sealing His covenant not only with them, but also] “with those who are not here with us today.” Deuteronomy 29:14