בראשית, פרק י״ז, פסוק א׳

After nearly a century of spiritual and moral elevation, Abraham is called to a new, unprecedented level of divine service. The timing of this revelation, occurring when he is ninety-nine years old, is not coincidental. It is designed to elevate him to a state of dual physical and spiritual perfection, laying the groundwork for the covenant of circumcision and the birth of Isaac. This advanced age magnifies the miracle of the impending birth and highlights Abraham's extraordinary dedication, as he prepares to undergo circumcision despite his physical frailty [רד״ק]. Waiting until this late stage of life also allowed Abraham to gradually subdue his material desires. Through the natural aging process and the act of circumcision, he ensures that Isaac will be born from a state of absolute purity, entirely distinct from the earlier birth of Ishmael [מלבי״ם, שפתי כהן]. Furthermore, this late calling stands as an eternal beacon of hope for converts and penitents, proving it is never too late to draw near to God and enter His covenant [שפתי כהן].

In initiating this covenant, God introduces Himself with a unique title that conveys both absolute power and self-sufficiency. The primary approach among commentators understands this name to denote strength, victory, and the mastery over the natural order. God assures Abraham that despite his advanced age, Sarah's barrenness, and the physical weakening that will result from circumcision, He holds supreme authority over nature and can alter it at will [רמב״ן, אבן עזרא, רד״ק, רבנו בחיי]. This power is specifically associated with hidden miracles. Unlike the overt wonders that would later occur in Egypt, these are miracles veiled within the natural framework, such as granting rainfall, enabling fertility, and delivering from death. Through them, God supersedes destiny without visibly disrupting the world's natural order [רמב״ן]. This assurance also serves to alleviate any fear Abraham might have had about being vulnerable to his enemies after circumcising himself, as the Almighty guarantees him strength and protection [ר' סעדיה גאון, רבנו בחיי, רבינו חננאל].

A complementary perspective interprets the divine name to mean "enough," signifying that God is the self-sufficient First Cause whose mere existence sustains all of creation [ספורנו, מזרחי, רש״ר הירש]. This concept holds a profound connection to the dawn of existence. During the act of creation, God deliberately halted the expansion of the universe, leaving the world intentionally incomplete. By doing so, He carved out space for humanity to partner with Him in the ongoing process of creation. In this light, the foreskin is not a divine error or an inherent flaw. Rather, it is a deliberate physical addition meant to be removed, granting man the agency to perfect his own nature and complete his personal microcosm, just as he is tasked with repairing the broader world [מלבי״ם, תורה תמימה, רש״ר הירש].

With this foundation established, God issues a directive for absolute devotion in both heart and action [רש״י, רד״ק]. Abraham is instructed to move forward like a child walking securely ahead of a guiding and protective father [שד״ל]. Until this moment, Abraham's service to God was rooted in intellectual understanding and the refinement of his character. Now, he is asked to perform a physical act that defies pure logic, thereby demonstrating absolute obedience born of free will [רד״ק, רש״ר הירש].

The ultimate goal of this command is to achieve a state of complete wholeness, both physically and spiritually. Physically, an uncircumcised person is viewed as possessing a blemish. The foreskin is a material excess that creates a deficiency, and its removal does not diminish a person but completes him, fulfilling his ultimate purpose [רש״י, רלב״ג, מלבי״ם, ר' סעדיה גאון]. This act grants a person mastery over his physical desires and senses, redirecting them from instinctual drives to the pure service of God [גור אריה, חומש קה״ת, צאינה וראינה]. Spiritually, this wholeness demands that Abraham face the trial of circumcision with unwavering faith, without questioning the divine logic [אבן עזרא, רש״י, בית הלוי]. He must trust entirely that everything rests in God's hands, rising above any fear of nature or astrology [רמב״ן, הטור הארוך], and achieving a perfect harmony between his inner intentions and his outward actions toward his Creator [רבנו בחיי].