בראשית, פרק כ״ו, פסוק כ״ח

A high-ranking Philistine delegation approaches Isaac with a proposal to renew diplomatic relations and establish a formal peace treaty. Seeking to explain their sudden shift from hostility to diplomacy, they describe a process of deep contemplation that led them to a clear, undeniable conclusion [העמק דבר]. The primary approach among commentators is that this realization was both historical and economic. Historically, the Philistines recognized that the same divine providence that accompanied Abraham was now clearly guiding Isaac [רש״י, מיני תרגומא]. Economically, they realized a profound error in judgment. They had initially assumed Isaac's massive success came at the expense of their own national resources. However, they noticed that during his stay in Gerar, their entire land experienced tremendous blessing, which abruptly ceased the moment he departed. This made it evident that God was truly with him [מלבי״ם, חזקוני]. They acknowledged that Isaac had grown far beyond the status of an ordinary citizen [ביאור שטיינזלץ], viewing his wealth as a heavenly gift granted to a righteous man who was the son of a righteous man [ביאור יש״ר]. Consequently, their desire for a treaty stemmed from a profound recognition of God's presence in his life, rather than mere physical fear [ספורנו].

The sincerity of the Philistines' approach remains a subject of debate. While some commentators view their words as an expression of genuine regret for having expelled Isaac [העמק דבר, ביאור יש״ר], others interpret their apology as a deceitful attempt to mask their previous hatred. According to this view, Isaac wisely chose to accept their overtures to preserve peace, fully aware of their true intentions [הכתב והקבלה]. As part of their proposal, the delegation asks to establish a binding oath and treaty [ביאור שטיינזלץ]. This raises a natural question regarding the necessity of a new agreement, given that Abraham had already sworn a peace pact with Abimelech and his descendants. One explanation is that the Philistines themselves had nullified the original treaty by stealing Isaac's wells and banishing him, making a renewed agreement essential [חזקוני]. Another perspective suggests they sought to upgrade the previous arrangement. While Abraham's pact involved only an oath, the Philistines now wanted to attach a formal curse to anyone who might violate the terms, ensuring the peace would remain intact [העמק דבר]. Furthermore, there was a calculated legal motive. As long as Isaac lived in Gerar under Philistine rule, any oath he made could be legally dismissed as having been coerced under duress. Now that he resided independently outside their territory, they urged him to formalize the treaty immediately as a free man, ensuring it carried undeniable legal weight without any loopholes [אור החיים, הכתב והקבלה].

The delegation's deliberately repetitive language in proposing the agreement serves several purposes. On a basic level, it clearly defines the two distinct camps entering the pact [אבן עזרא, ביאור יש״ר]. Many commentators also see this language as a bridge between the past and the present, affirming that the historical oath sworn by the previous generation would be upheld now with Isaac [רש״י, רשב״ם, גור אריה, מזרחי, שפתי חכמים]. Beyond this, the phrasing reflects a deliberate expansion of the treaty's participants. Unlike the agreement with Abraham, which was an exclusive, personal pact with the king, the new formulation formally includes the Philistine officials and the general populace. Since the local people were the ones who initially breached the peace out of jealousy, they were now explicitly bound to the new accord [העמק דבר, צרור המור, אור החיים]. Alternatively, the phrasing can be understood as an invitation for Isaac to join an internal alliance of brotherhood that already existed among the Philistines themselves [מלבי״ם]. Finally, the distinct wording highlights the religious divide between the two parties. The formulation allows the Philistines to swear by their customary idols on their side, while Isaac would swear by God on his, effectively bridging their theological differences to achieve a functional diplomatic resolution [הטור הארוך, ריב״א, חזקוני].