'Understanding' in the Bible

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

The rest of the people, the priests, the Levites, the porters, the singers, the Nethinim, and all those who had separated themselves from the peoples of the lands to the law of God, their wives, their sons, and their daughters, everyone who had knowledge, and understanding --