Noah's Ark ark could contain all the animals in the world, argued that Moses, the traditional author of the book of Genesis, had been brought up in Egypt and would therefore have used the larger Egyptian cubit. He also fixed the shape of the ark as a truncated pyramid, square at its base, and tapering to a square peak one cubit on a side; it was not until the 12th century that it came to be thought of as a rectangular box with a sloping roof. Early Christian artists depicted Noah standing in a small box on the waves, symbolizing God saving
Noah later Christian thought, the Ark came to be compared to the Church: salvation was to be found only within Christ and his Lordship, as in Noah's time it had been found only within the Ark. St Augustine of Hippo (354–430), demonstrated in "The City of God" that the dimensions of the Ark corresponded to the dimensions of the human body, which corresponds to the body of Christ; the equation of Ark and Church is still found in the Anglican rite of baptism, which asks God, "who of thy great mercy didst save Noah," to receive into the Church the infant