'Thirty' in the Bible

And he bringeth me in unto the outer court, and lo, chambers and a pavement made for the court all round about -- thirty chambers on the pavement --

And the side-chambers are side-chamber by side-chamber, three and thirty times; and they are entering into the wall -- which the house hath for the side-chambers all round about -- to be taken hold of, and they are not taken hold of by the wall of the house.

In the four corners of the court are perfume courts, forty long, and thirty broad, one measure is to the four corners.