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.
THANKSGIVING FOR GOD'S UNFAILING MERCIES: We give thanks to You that You are the Lord our God and the God of our fathers forever and ever. Through every Generation, You have been the rock of our lives, the shield of our salvation. We will give You thanks and declare Your praise for our lives that are committed into Your hands, for our souls that are entrusted to You, for Your miracles with us, and for Your wonders and Your benefits that are with us at all times, evening, morning and noon. Oh Beneficent one, Your mercies never fail; Oh merciful one, Your loving kindnesses never cease. We have always put our hope in You. For all these acts may Your name be blessed and exalted continually, Our King, forever and ever. Let every living thing give thanks to You and praise Your name in truth, Oh God, our salvation and our help. (Selah) Blessed are You, Oh Lord, whose Name is the Beneficent One, and to whom it is fitting to give thanks.