The Amidah - called The Standing Prayer, was composed around 450 BCE, by the 120 Men of the Great Assembly, including Ezra and Nehemiah at the time of the rebuilding of the Temple. It was to be said while standing. Three (3) times a day at the hours of prayer: 9:00 am, 12:00 pm and, 3:00 pm.
FOR GATHERING OF EXILES: Sound the great shofar (trumpet) for our freedom, raise the ensign to gather our exiles, and gather us from the four corners of the earth. Blessed are You, Oh Lord, who gathers the dispersed of his people Israel.