ירמיהו, פרק ל״ג, פסוק כ״ה

God's eternal promise to His people is rooted in the absolute certainty of the physical world. The very existence of the universe serves as an unbreakable guarantee of the enduring relationship between God and the Israelites. The primary approach among commentators views this as a powerful rhetorical condition: just as the fixed laws of nature cannot be undone, it is utterly impossible for God to break His covenant with His people. The steady, predictable cycle of day and night arriving at their proper times [רש״י, ביאור שטיינזלץ], alongside the permanent laws governing heaven and earth [מצודת דוד], stand as proof of this loyalty. Only if one could imagine a reality where these fundamental forces simply ceased to exist, could one fathom God rejecting the descendants of Jacob and King David [רד״ק, מלבי״ם]. Ultimately, both the laws of nature and the choosing of Israel are seen as absolutely necessary for the world to exist and reach its ultimate perfection [מלבי״ם]. Within this promise, the continuity of the Davidic dynasty is especially highlighted, as reverence for the monarchy provides the essential foundation for leading the nation [רד״ק].

Alongside this straightforward understanding, a rich tradition interprets the idea of a covenant not as the physical laws of nature, but as fundamental commandments that sustain the world. One perspective suggests that this covenant refers to the Torah itself, teaching that the heavens and the earth were created solely for its sake, though some note this explanation does not perfectly align with the natural sequence of the surrounding text [רש״י].

Another tradition identifies this sustaining covenant as the commandment of circumcision, a merit that actively helps the Israelites endure throughout history [צאינה וראינה]. This idea is illustrated through a conceptual clash between circumcision and the Sabbath. While the Sabbath represents God resting after creating the world, the requirement to perform a circumcision on the eighth day overrides the laws of the Sabbath, demonstrating its higher status. This dynamic is compared to two noblewomen walking on a path; the one who steps aside to let the other pass is understood to be lower in rank. The deeper connection between these two commandments is that both center on the concepts of rest and restraint. The Sabbath provides rest from the physical labor of creation, while circumcision represents moral restraint and rest from immorality. Because the world was once destroyed during the generation of the Flood due to rampant immorality, it is the restraint brought about by circumcision that actively sustains the world and ultimately paves the way for redemption [צאינה וראינה].