As the brothers plot a fatal end for Joseph, Reuben intervenes with a calculated compromise. Knowing that a direct plea for Joseph's life has already been rejected, he acts with careful deception, pretending to agree with the brothers' desire to eliminate him [שד״ל, ביאור יש״ר]. He cautions them against shedding blood, presenting a moral and legal argument that causing death indirectly is a lesser offense than committing murder with their own hands [רמב״ן, העמק דבר, גור אריה]. To avoid arousing suspicion that he is acting out of love or concern, Reuben deliberately speaks in general terms, avoiding any personal reference to Joseph's blood [רמב״ן, ביאור יש״ר]. Instead of direct violence, he suggests casting Joseph into a specific pit in the wilderness. He frames this to the brothers as a plan for a slow, silent death by starvation and thirst [מלבי״ם, שטיינזלץ]. The chosen pit is deep and isolated, ensuring that cries for help would go unheard [העמק דבר, קונטרס חיבה יתירה, ביאור יש״ר]. Furthermore, Reuben warns them not to lay a hand on him, instructing them to refrain from further cruelty or beatings once Joseph is in the pit [ספורנו, העמק דבר].
Despite the grim facade presented to the brothers, Reuben harbors a secret rescue mission. The divine narrative itself intervenes, providing testimony through the Holy Spirit to reveal Reuben's hidden intention to save Joseph and return him safely to their father—a truth he could never express aloud [רש״י, רשב״ם, מזרחי, מלבי״ם]. The primary approach among commentators suggests that Reuben's motivation is rooted less in overwhelming brotherly love and more in a profound sense of personal responsibility. As the eldest, he knows their father will hold him accountable for the murder. Furthermore, because his birthright was recently transferred to Joseph, Reuben acutely fears being suspected of orchestrating the murder out of jealousy [רש״י, שפתי חכמים, יריעות שלמה, משכיל לדוד]. Other perspectives suggest that Reuben simply recognizes Joseph's innocence and believes he does not deserve to die [רד״ק], or that he feels gratitude toward Joseph for still counting him among the eleven stars in his prophetic dream [שפתי כהן].
A well-known tradition introduces a complication to this rescue plan, suggesting that the pit was actually swarming with snakes and scorpions. If so, casting Joseph into it hardly seems like a rescue. One approach explains that neither Reuben nor the brothers knew the venomous creatures were there. Had the brothers witnessed Joseph miraculously surviving a pit of snakes, they would have recognized his absolute righteousness and never dared to sell him later [רמב״ן, מזרחי, ריב״א]. Another perspective clarifies that Reuben points to a specific, completely safe pit. However, once Reuben departs, the brothers ignore his exact instructions and throw Joseph into a different, dangerous pit. This explains why Reuben later returns to his originally designated pit only to find it empty [הטור הארוך, חזקוני, צאינה וראינה]. On a more literal level, the pit is simply devoid of water, ensuring Joseph will not drown immediately and affording Reuben the necessary time to orchestrate a full rescue [רמב״ן, הטור הארוך].
Reuben's quick and proactive effort to save a life earns him a lasting historical reward. Generations later, the very first Cities of Refuge—designed to protect individuals who cause death accidentally—are established within the territory of the tribe of Reuben [שפתי כהן, משכיל לדוד, ברכת אשר]. Ultimately, the public documentation of his righteous, hidden intent serves as a timeless lesson, demonstrating the immense value of recognizing and publicizing those who perform good deeds [תורה תמימה].