Ezra 2:36 Kabbalah

הַֽכֹּהֲנִ֑ים בְּנֵ֤י יְדַֽעְיָה֙ לְבֵ֣ית יֵשׁ֔וּעַ תְּשַׁ֥ע מֵא֖וֹת שִׁבְעִ֥ים וּשְׁלֹשָֽׁה׃ (ס)

The priests: The children of Jedaiah, of the house of Jeshua, nine hundred seventy and three.

Read kabbalistic (mystical) interpretation of Ezra 2:36: and classical mystical sources.