As a monument of God’s great kindness and gracious manifestation of himself to him, which might bring this mercy to his remembrance in his return, Gen_31:13. This was an ancient practice among the patriarchs, Gen_35:14; but afterwards, upon the growing abuse of it among the heathens, it was forbidden by God, Lev_26:1Deu_7:5 12:3. The
oil he brought with him either for food or medicine, or for the anointing of himself, as need required;
and poured it upon the top of the stone, as a token of his consecration thereof to this use to be a memorial of God’s favour to him. Oil was used in sacrifices, and in the consecration of persons and places, Exo_30:25,26 40:9.