Following a period of wandering, conflict, and expulsion, Isaac receives a divine revelation meant to offer comfort, security, and a renewal of the covenant. This encounter happens on his very first night back in Beersheba [ברכת אשר על התורה]. God introduces Himself as the God of Abraham, assuring Isaac that he will receive the same special divine protection his father enjoyed [העמק דבר]. Interestingly, in this encounter, only the name denoting strict justice is used, rather than the name associated with mercy. This hints that Isaac was enduring a period of hardship and severe judgment without the intervention of divine mercy [קיצור בעל הטורים].
God directly addresses Isaac's deep anxiety and sense of displacement, commanding him not to fear. The primary approach among commentators is that Isaac was deeply unsettled following his humiliating expulsion by the Philistine king and the bitter disputes over water wells. He worried his enemies might unite to attack his household or drive him away once more. Unaccustomed to such hostility, Isaac's peaceful nature made these sudden quarrels particularly jarring [בכור שור]. The humiliation also led him to worry that God had abandoned him [אור החיים], and he feared the endless disputes would ruin his livelihood [ספורנו]. Furthermore, he was hesitant to publicly share his faith, fearing the local reaction [מלבי"ם]. God therefore reassures Isaac that He remains with him and that there is no cause for alarm.
Along with this protection, God promises to bless Isaac and multiply his descendants. Some view this as a promise of continued material success and wealth [ספורנו]. This prosperity would ultimately force his enemies to recognize God's presence in his life, compelling them to seek peace with even greater respect than they had shown his father [רמב"ן, רד"ק, הטור הארוך, ביאור יש"ר]. Conversely, another perspective views this not as a promise of physical wealth—since his existing riches had caused his expulsion in the first place—but as a profound spiritual blessing. It guarantees that his descendants who dedicate themselves to studying the Torah will find special favor among the nations, ensuring their survival through divine providence during times of hardship and exile [העמק דבר].
All of this abundance and protection is granted for the sake of Abraham. This merit stands because Abraham obeyed God's commands with the absolute devotion of a servant [רד"ק], and the holy faith he established in Beersheba prepared the spiritual ground for God's presence to rest upon his son [מלבי"ם]. Moreover, this phrase indicates a direct benefit to Abraham himself. The greatest joy for Abraham in the heavenly realm is to see his descendants living in Beersheba, studying and spreading the very teachings he worked so hard to establish [העמק דבר].