As Jacob prepares to journey to Bethel, he readies his camp for a profound spiritual encounter with God. This momentous event requires a deep process of purification and transformation, involving not just his immediate family but all his servants and companions [רד״ק, ביאור שטיינזלץ]. The preparation unfolds in three gradual stages of cleansing, moving from the external to the internal, and back out again: discarding foreign gods, purifying the body, and changing clothes.
The first stage is the removal of foreign gods. The primary approach among commentators is that this refers to the physical idols and jewelry, such as nose rings, taken as spoils from the city of Shechem. The very concept of these foreign objects represents alienation and a denial of holiness [הכתב והקבלה, ביאור יש״ר]. Although it might have been technically permissible to melt down the gold and silver once the original owners had abandoned their pagan worship, Jacob took a stricter path. He insisted on entirely discarding these items so that his camp would derive no benefit from anything connected to idolatry, ensuring complete purity [רד״ק, ספורנו, רבינו בחיי]. Others suggest a more practical concern: Jacob worried that the idols had never been properly nullified in the first place, as captive women and children lacked the legal standing to do so, or because some idols remained hidden. Thus, he demanded a thorough search and complete destruction [אור החיים, העמק דבר].
Alongside the physical removal, there is a deep spiritual dimension. By directing his camp to eliminate the foreign influences residing within them, rather than merely discarding what they held in their hands, Jacob pointed to the foreign god residing within the human body—the evil inclination, improper thoughts, and negative character traits. He required them to correct their inner thoughts and achieve complete repentance in their hearts before journeying to Bethel [כלי יקר, מלבי״ם, חתם סופר].
The second stage involves personal purification. On a physical level, this meant washing the body and immersing in water to cleanse away the severe impurity caused by contact with either idolatry or the corpses in Shechem [אבן עזרא, רש״י, רד״ק, אור החיים]. Spiritually, this washing represents the abandonment of sin. Because sin itself is viewed as a form of impurity, the act of returning to God brings about a profound purification of the soul [רבינו בחיי, קונטרס חיבה יתירה].
The final preparation required changing their garments. Practically, the clothes they were wearing had been defiled through contact with idols or the dead, or they might have originally been used in pagan rituals, making it necessary to replace them [רש״י, מזרחי, אור החיים]. This action also establishes a lasting principle: one must approach prayer in a designated place with both a clean body and clean garments [אבן עזרא]. Specifically, it refers to changing one's outer garments to honor the destination and the occasion, much like the Israelites later prepared themselves to receive the Torah at Mount Sinai [העמק דבר, רש ר הירש].
On a symbolic level, clothes serve as a metaphor for a person's actions and character. Just as a garment envelops the physical body, a person's deeds envelop their spiritual self. Changing clothes signifies a practical transformation—shedding negative behaviors and putting on a fresh attire of good deeds. Ultimately, it is impossible to enter the presence of the King wearing garments soiled by sin and wrongdoing [כלי יקר, מלבי״ם].