Following a period of tension and conflict, an offer of peace is met not only with a verbal agreement but with a shared, generous meal. Isaac responds positively to the Philistines by initiating a feast, an event characterized by the drinking that traditionally accompanies such gatherings [אם למקרא]. This shared meal serves as a practical and public confirmation of their reconciliation. Hosting a feast is an accepted practice meant to finalize a newly formed treaty [ביאור שטיינזלץ], and it functions to firmly establish goodwill and friendship between the formerly opposing sides [רד״ק].
Beyond its diplomatic purpose, this act reveals the depth of Isaac's character. By preparing this meal, he proves that his acceptance of their peace offer is entirely genuine, showing that he holds no lingering anger or resentment in his heart [ביאור יש״ר]. This readiness to forgive reflects the defining nature of righteous individuals, who are easily appeased and warmly welcome anyone seeking peace [העמק דבר]. Furthermore, Isaac displays profound kindness, rising above the behavior of his guests. In the past, Abimelech never hosted a feast for Isaac, despite the existing peace treaty he had with Abraham. Rather than holding a grudge over this past slight, Isaac chooses a different path, hosting his visitors with true generosity [אלשיך].