Ellicott's Commentary for English Readers - Genesis 28:18
(18) Jacob . . . took the stone . . . and set it up for a pillar.—In so doing, Jacob’s object was to mark the spot where so important a communication had been made to him. But besides its use as a memorial, it would enable him to identify the place upon his return, and pay there his vows. And as oil was the symbol of the dedication of a thing to holy uses, he pours oil upon the top of it. read more
Ellicott's Commentary for English Readers - Genesis 28:17
(17) How dreadful.—The manifestation of God must always inspire awe and dread, but not fear: for where He reveals Himself, there is “the gate of heaven”—the appointed entrance for prayer now, and for admission to the glorified life hereafter. read more