'Thirty' in the Bible

The food of Solomon for one day was thirty dry measures of choice meal and sixty dry measures of flour;

Then King Solomon conscripted a forced labor from all Israel, and the forced labor [numbered] thirty thousand men.

Now the house that King Solomon built for Yahweh [was] sixty cubits [in] its length and twenty cubits [in] its width and thirty cubits [in] its height.

He built the House of the Forest of Lebanon; one hundred cubits its length, fifty cubits its width, and thirty cubits its height, on four rows of cedar pillars and cedar beams atop the pillars.

The hall of pillars he made fifty cubits [in] its length and thirty cubits [in] its width, and a porch [was] {in front of them}, with pillars and an overhang {in front of them}.

He also made the molten sea, ten cubits {in diameter}, and five cubits [was] its height. A measuring line of thirty cubits would encircle it all around.