'Understand' in the Bible

So on the first day of the seventh month, Ezra the priest brought out the Law before the assembled people. Both men and women were in attendance, as well as all who could understand what they were hearing.

Ezra read from it, facing the plaza in front of the Water Gate, from early in the morning until mid-day in the presence of the men and women, as well as all who could understand. All the people were attentive to the Book of the Law.

All the people gathered as a united body into the plaza in front of the Water Gate. They asked Ezra the scribe to bring out the Book of the Law of Moses, which the LORD had commanded for Israel.

The next day, the heads of the families of all the people were gathered together, along with the priests and the descendants of Levi, to meet with Ezra the scribe in order to understand the words of the Law.