Abram’s journey back from Egypt to Canaan is not the random wandering of a shepherd, but a deliberate return to his spiritual destiny. Following a difficult trial in Egypt, he heads directly to a cherished location that represents the dedication of the land to God. Arriving at the mountain, Abram does not simply pitch his tent at random. Instead, he goes exactly to the spot where he previously worshipped [רד״ק, קאסוטו]. Although he had built an altar earlier in the city of Shechem, that structure was merely a quick response to a divine revelation without a prolonged stay. This current location was the first place where he truly settled and publicly proclaimed God's name [העמק דבר, מלבי״ם].
Returning to this exact altar highlights a spiritual principle: a person should establish a fixed place for prayer and worship, as the heart is naturally more focused and directed in a familiar setting [רד״ק]. Abram does not build a new altar at this time, likely because he did not receive a new divine promise that would require one [ברכת אשר].
At this altar, Abram calls out in the name of God. Some commentators suggest this action simply identifies the location as the place where he had prayed in the past [רש״י, שפתי חכמים, בכור שור], though this reading can be difficult to align with the simple flow of the narrative [ברכת אשר]. The primary approach among commentators is that this describes a new action in the present: upon returning, Abram once again calls out to God, just as he had done before [רש״י, שד״ל, רד״ק, ביאור יש״ר]. This act is not about naming sacrifices, but about making God known to the public. Abram gathered people together, prayed, and spoke to the masses to spread this new faith throughout the world [העמק דבר, מלבי״ם, ביאור שטיינזלץ]. Resuming this public worship immediately after leaving Egypt serves as a renewal of his spiritual mission and a symbolic claim over the land for God [קאסוטו].
As for why Abram offers a prayer at this specific moment, it serves as an expression of deep gratitude. It is seen as a prayer of thanksgiving for his safe return from Egypt [בכור שור, ברכת אשר]. Furthermore, while his past prayers were pleas for God to fulfill His promises, his situation has now changed. Having acquired wealth in Egypt, Abram stands before God to give thanks for his financial blessing—a kindness granted to him that went well beyond the original promise of merely inheriting the land [משכיל לדוד].