In 354 BCE, the prophet Chaggai encouraged the Jews to rebuild the Holy Temple -- a construction project which had begun 18 years earlier, but was halted due to political pressure. The Temple would stand for 420 years, before being destroyed by the Romans in 70 CE. On this same day, Chaggai prophesied the downfall of the great Persian empire, which would ultimately lead to the salvation of the Jews. This is recorded in the biblical Book of Chaggai, chapter 2.