St. Hippolytus of Rome (died 235) sought to demonstrate that the Ark was a symbol of the Christ who was expected, stating that the vessel had its door on the east side—the direction from which Christ would appear at the Second Coming—and that the bones of Adam were brought aboard, together with gold, frankincense, and myrrh (the symbols of the Nativity of Christ). Hippolytus furthermore stated that the Ark floated to and fro in the four directions on the waters, making the sign of the cross, before eventually landing on Mount Kardu in the east, in the land of the sons of Raban, and the Orientals call it Mount Godash; the Armenians call it Ararat. On a more practical plane, Hippolytus explained that the lowest of the three decks was for wild beasts, the middle for birds and domestic animals, and the top for humans. He says male animals were separated from females by sharp stakes to prevent breeding.