The roots of the National Day of Prayer run deeper than most realize. Long before it was signed into law by President Truman in 1952, or fixed to the first Thursday of May by President Reagan in 1988, it was a practice born of necessity. In 1775, the Continental Congress called for a day of prayer because they knew the weight of the future was too heavy to carry alone.   They were not just praying for personal comfort; they were praying for the very foundation of a nation. &n...