'Thirty' in the Bible

And the days that David reigned over Israel were forty years; seven years reigned he in Hebron, and thirty and three years reigned he in Jerusalem.

And Solomon's provision for one day was thirty measures of fine flour, and threescore measures of meal,

And king Solomon raised a levy out of all Israel; and the levy was thirty thousand men.

And the house which king Solomon built for Jehovah, the length thereof was threescore cubits, and the breadth thereof twenty cubits , and the height thereof thirty cubits.

For he built the house of the forest of Lebanon; the length thereof was a hundred cubits, and the breadth thereof fifty cubits, and the height thereof thirty cubits, upon four rows of cedar pillars, with cedar beams upon the pillars.

And he made the porch of pillars; the length thereof was fifty cubits, and the breadth thereof thirty cubits; and a porch before them; and pillars and a threshold before them.

And he made the molten sea of ten cubits from brim to brim, round in compass, and the height thereof was five cubits; and a line of thirty cubits compassed it round about.

In the thirty and first year of Asa king of Judah began Omri to reign over Israel, and reigned twelve years: six years reigned he in Tirzah.

And in the thirty and eighth year of Asa king of Judah began Ahab the son of Omri to reign over Israel: and Ahab the son of Omri reigned over Israel in Samaria twenty and two years.

And Ben-hadad the king of Syria gathered all his host together; and there were thirty and two kings with him, and horses and chariots: and he went up and besieged Samaria, and fought against it.

And they went out at noon. But Ben-hadad was drinking himself drunk in the pavilions, he and the kings, the thirty and two kings that helped him.

Now the king of Syria had commanded the thirty and two captains of his chariots, saying, Fight neither with small nor great, save only with the king of Israel.

Jehoshaphat was thirty and five years old when he began to reign; and he reigned twenty and five years in Jerusalem. And his mother's name was Azubah the daughter of Shilhi.