'Thirty' in the Bible
And Solomon's provision for one day was thirty measures of fine flour, and sixty measures of meal,
And king Solomon raised a levy out of all Israel; and the levy was thirty thousand men.
And the house that king Solomon built for Jehovah was sixty cubits in length, and twenty in breadth, and thirty cubits in height.
And he built the house of the forest of Lebanon; its length was a hundred cubits, and its breadth fifty cubits, and its height thirty cubits, upon four rows of cedar-pillars, with cedar-beams upon the pillars;
And he made the porch of pillars; its length was fifty cubits, and its breadth thirty cubits; and there was a porch in front of them; and there were pillars, and steps in front of them.
And he made the sea, molten, ten cubits from brim to brim, round all about; and its height was five cubits; and a line of thirty cubits encompassed it round about.