'Word' in the Bible

And in the first year of Cyrus king of Persia, that the word of Jehovah by the mouth of Jeremiah might be accomplished, Jehovah stirred up the spirit of Cyrus king of Persia, and he made a proclamation throughout his kingdom, and also in writing, saying,

Then Ezra arose, and made the chiefs of the priests, of the Levites, and of all Israel, to swear that they would do according to this word. And they swore.