The names of the precious stones in the Greek are somewhat uncertain; but here it is obvious from the context that the Jaspis what is now called the opal, and the Smaragdos the aqua-marine, or blue beryl.

The somatic divisions in the Apocalypse agree with the symbolism of the Jewish tabernacle, except that the latter was semi-exoteric, following the threefold system. Thus Josephus says of the tabernacle and its arrangements: "They represent in some sort the universe. For out of the three portions into which the length of the tabernacle is divided, the two into which the sacrificing priests are allowed to enter represent the Earth and the Sea, which are open to everyone, and the third portion, which is inaccessible to them, is like the Sky, which is reserved for God, because it is his dwelling-place."