Every synagogue has an Ark, which is a cupboard that houses the Torah Scrolls, which contain the Hebrew Bible's text, as well as a desk from which to read the Torah. The Ark is called after the wooden box that housed the stone tablets of the Covenant given to Moses on Mount Sinai by God. Though made of wood, the box was so holy that only the priests were allowed to touch it or look inside. The traditional ark is about 3 feet high, 4 feet wide and 6 feet long. It contains shelves for the scrolls, which can be locked away when not in use. A small window allows light into the room while another, slightly larger window looks onto the nave of the synagogue where the Torah is read from. Synagogues are usually built around an open space, the nave, where the Torah is read from the five books of Moses. At one end of the nave there is a raised platform, the bimah, where the senior rabbi stands during services. The other end of the nave opens out onto a garden or a square where people can walk around and visit between services. There are many different kinds of synagogues, depending on what part of Israel they are in.