"When God first called Moses, not being then an expert prophet, he was addressed in a voice similar to that of his own father, and he thought that his father had come to him from Egypt. God then told him that it was not his earthly father who called him, but the God of his father. Then, we find, Moses hid his face, which he did not do when first called by his name; not in fact until he heard the words, 'I am the God of thy fathers.'"