The first directive given to humanity establishes clear boundaries amidst the overwhelming abundance of the Garden of Eden. This initial restriction on eating from the Tree of Knowledge of Good and Evil is far more than a simple dietary rule. It serves as a profound test designed to shape human character, instill self-discipline, and challenge humanity to control its impulses [קאסוטו]. Through this single boundary, the fundamental concepts of free will, consequence, and the limits of human attainment are introduced to the world.
The warning is delivered with an emphatic repetition, ensuring the severity of the command is fully understood. While the primary approach among commentators is that the restriction applies specifically to eating the fruit—since the wood of a tree is not food—others expand its scope. They view the command as a total separation, forbidding any benefit or pleasure from the tree, even a mere touch, because physical contact could inevitably lead to consumption [העמק דבר]. Alternatively, this repetition is understood either as a standard linguistic feature of biblical speech to accommodate a longer statement [ר' סעדיה גאון], or as an indication that the restriction applies equally to the man and to all his future dependents [חזקוני].
The very name of the tree raises a fundamental question regarding humanity's mental capacity before the first sin. The commentators agree that the first man was created with immense intelligence, evidenced by his ability to assign precise names to all animals based on their inner nature. God would certainly not issue a warning to a creature lacking basic comprehension [אבן עזרא, רד"ק, ר' סעדיה גאון, מחוקקי יהודה]. Therefore, the tree was not designed to grant foundational wisdom; if it were genuinely beneficial for human intellect, God would not have withheld it [ר' סעדיה גאון, תולדות יצחק].
Instead of adding intellectual insight, the primary approach among commentators is that the tree awakened the evil inclination, physical desires, and subjective choice. Before the sin, humanity operated strictly on absolute, objective truth, functioning much like the celestial bodies, entirely free from personal bias. Consuming the fruit birthed selfishness and internal desire, causing the man to evaluate reality through a lens of personal interest. Good was reduced to whatever felt desirable and attractive, while bad simply became whatever was forbidden [רד"ק, תולדות יצחק, חומש קה"ת]. God, knowing the potential for failure, provided this test so humanity could earn immense reward by conquering its impulses, ultimately teaching that adhering to His commands is the true source of life [ביאור יש"ר, ר' סעדיה גאון]. Consequently, the Tree of Life was not initially forbidden, as a sinless human required no remedy for mortality. Only after the failure, when evil became attached to human nature, was access to the Tree of Life blocked to prevent that evil from existing eternally [תולדות יצחק, חומש קה"ת].
It is notable that this boundary was established when the man was still alone, prior to the creation of the first woman. This timing was deliberate, intended to foster her reverence and respect for him when he relayed the instruction, to grant him additional reward for teaching, and to establish a lasting model for transferring God's commands through the head of the household [ר' סעדיה גאון]. Furthermore, this indirect reception of the command offers a slight measure of defense for the woman, as she did not hear the prohibition directly from God [ברכת אשר].
The consequence for violating the boundary is framed with absolute finality: a promise of certain death on the very day the fruit is eaten. Yet, this presents a clear challenge, as the man lived for centuries after his failure. The primary approach among most commentators is that the punishment did not imply immediate physical death. Rather, at the exact moment of the sin, humanity became mortal. Before the failure, the divine soul granted eternal existence, akin to the angels, but the sin shattered this continuity and subjected humanity to the inevitable rule of death [רמב"ן, טור הארוך, רבינו בחיי, רקנאטי, חזקוני]. Conversely, another perspective argues that humans, being composed of physical elements, were naturally destined to die from the moment of creation. In this view, the threatened punishment was an unnatural, premature death delivered by God before its appointed time [רמב"ן, שד"ל, רבינו בחיי, נתינה לגר].
The emphatic language of the warning is seen by some as a hint to both of these realities: natural death and sudden, accidental death [רבינו בחיי]. Others suggest it describes a gradual decline in physical vitality that began the moment the fruit was consumed [הכתב והקבלה]. Another approach resolves the timeline by noting that a single day for God equals a thousand human years; since the man lived for nine hundred and thirty years, he indeed died within that divine timeframe [רד"ק, ריב"א, תולדות יצחק]. Additional interpretations suggest the promised death was spiritual, manifesting as a severing of pure intellectual comprehension [רלב"ג], or that the subsequent expulsion from the Garden of Eden served as a diminished form of death [רש"ר הירש]. It is also proposed that immediate death was only averted because sincere repentance softened the harshness of the decree [שד"ל, תולדות יצחק].
Ultimately, the initial human perception of this warning played a crucial role in the downfall. It appears they understood God's caution entirely literally, assuming the tree contained a deadly, natural poison that would instantly kill anyone who ate or even touched it. This fundamental misunderstanding of the spiritual nature of the punishment provided the serpent with the perfect opportunity for deception. By pushing the woman against the tree and proving that mere physical contact was not fatal, the serpent led her to the tragic, mistaken conclusion that consuming the fruit would be equally harmless [ברטנורא, קונטרס חיבה יתירה].