Genesis 28:16

The Lord is in this place; and I knew it not - That is, God has made this place his peculiar residence; it is a place in which he meets with and reveals himself to his followers. Jacob might have supposed that this place had been consecrated to God. And it has already been supposed that, his mind having been brought into a humble frame, he was prepared to hold communion with his Maker.

Jacob awakes, and exclaims, "Surely the Lord is in this place, and I knew it not." He knew his omnipresence; but he did not expect a special manifestation of the Lord in this place, far from the sanctuaries of his father. He is filled with solemn awe, when he finds himself in the house of God and at the gate of heaven. The pillar is the monument of the event. The pouring of oil upon it is an act of consecration to God who has there appeared to him Numbers 7:1. He calls the name of the place Bethel, "the house of God." This is not the first time it received the name. Abraham also worshipped God here, and met with the name already existing (see on Genesis 12:8; Genesis 13:3; Genesis 25:30.)

28:16 Surely the Lord is in this place, and I knew it not — God's manifestations of himself to his people carry their own evidence along with them. God can give undeniable demonstrations of his presence, such as give abundant satisfaction to the souls of the faithful, that God is with them of a truth; satisfaction not communicable to others, but convincing to themselves. We sometimes meet with God there, where we little thought of meeting with him. He is there where we did not think he had been, is found there where we asked not for him.