Now this is the copy of the letter that the king Artaxerxes gave unto Ezra the priest, the scribe, even a scribe of the words of the commandments of the LORD, and of his statutes to Israel.
Here is the easy-to-understand version of the verse: This is the copy of the letter King Artaxerxes gave to Ezra the priest and writer. Ezra was an expert in the LORD's commands and rules for Israel.