His son Jeshua was one of those who joined Zerubbabel in building the altar of God in Jerusalem, and offering burnt offerings upon it (Ezra 3:2). This was after the return from the Babylonian captivity. Jozadak is a shortened form of Jehozadak.
Meta. The significance is virtually the same as that of Jehozadak: an inner perception of the greatness, the justice, the righteousness of the Christ, Jehovah, as inherently belonging to man and as being possible of expression in and through man. Through the son Jeshua (signifying the same as Joshua, I AM) these spiritual qualities of the Christ are established in the individual consciousness and become a part of one's character and life.