XVIII. (88) Moreover, he chose the materials of this embroidery, selecting with great care what was most excellent out of an infinite quantity, choosing materials equal in number to the elements of which the world was made, and having a direct relation to them; the elements being the earth and the water, and the air and the fire. For the fine flax is produced from the earth, and the purple from the water, and the hyacinth colour is compared to the air (for, by nature, it is black), and the scarlet is likened to fire, because each is of a red colour; for it followed of necessity that those who were preparing a temple made by hands for the Father and Ruler of the universe must take essences similar to those of which he made the universe itself. (89) Therefore the tabernacle was built in the manner that has been here described, like a holy temple. And all around it a sacred precinct extended a hundred cubits in length and fifty cubits in width, having pillars all placed at an equal distance of five cubits from one another, so that there were in all sixty pillars; and they were divided so that forty were placed along the length and twenty along the breadth of the tabernacle, one half on each side. (90) And the material of which the pillars were composed was cedar within, and on the surface without silver; and the pedestals of all of them were made of brass, and the height was equal to five cubits. For it seemed to the architect to be proper to make the height of what was called the hall equal to one half of the entire length, that so the tabernacle might appear to be elevated to double its real height. And there were thin curtains fitted to the pillars along their entire length and breadth, resembling so many sails, in order that no one might be able to enter in who was not pure.