7. But he, by no means neglectful of the reverence due to the Father, was appointed to teach the knowledge of the Father to them all. For instance, the Lord God, it is said, appeared as a common man to Abraham while he was sitting at the oak of Mambre. And he, immediately falling down, although he saw a man with his eyes, nevertheless worshiped him as God, and sacrificed to him as Lord, and confessed that he was not ignorant of his identity when he uttered the words, “Lord, the judge of all the earth, wilt thou not execute righteous judgment?”