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.
PRAYER FOR UNDERSTANDING: You favor men with knowledge, and teach mortals understanding. Oh favor us with the knowledge, the understanding and the insight that comes from You. Blessed are You, Oh Lord, the gracious giver of knowledge.