  But if the unity of the system is projected into the future, can it truly be known in the present? The third part of the Star presents life within the Jewish and Christian religious communities as the surprising answer to this question. According to Rosenzweig, life within these communities allows for the possibility of “anticipating” the ultimate redemptive unity of the “All”. The social practices through which these communities constitute themselves lay the groundwork for such communal anticipation. More significantly, the course of the Jewish and Christian liturgical calendars—the yearly path along which Jewish and Christian communities celebrate creation, revelation, and redemption, each in its own particular manner—makes it possible, according to Rosenzweig, for members of these communities to envision within time, the ultimate unity of the “All” that will only be actual in the future redemption. Judaism and Christianity are thus to be understood, according to Rosenzweig, as “guarantees” of that ultimate redemption. Life within Jewish or Christian community enables the person who stands in the middle of the course of the “All” to see the ultimate unity towards which all particular beings strive through relations, and to take her place within this course with confidence.