Harmachus' (Gr.) The Egyptian Sphinx, called Har-em-chu or “Horus (the Sun) in the Horizon”, a form of Ra the sun-god; esoterically the risen god. An inscription on a tablet reads “0 blessed Ra Harmachus Thou careerest by him in triumph. 0 shine, Amoun-Ra Harmachus self-generated ‘. The temple of the Sphinx was discovered by Mariette Bey close to the Sphinx, near the great Pyramid of Gizeh All the Egyptologists agree in pronouncing the Sphinx and her temple the “oldest religious monument of the world ”—at any rate of Egypt.
Source: H.P.Blavatsky - The Theosophical Glossary