'Understanding' in the Bible

And Ezra the priest brought the law before the assembly, both men and women, and all that could hear with understanding, upon the first day of the seventh month.

And the rest of the people, the priests, the Levites, the porters, the singers, the Nethinim, and all they that had separated themselves from the peoples of the lands unto the law of God, their wives, their sons, and their daughters, every one that had knowledge, and understanding;