Publisher Desc.  The text to this beloved hymn, written by William Pierson Merrill (1867-1954), has been sung to various tunes throughout the years. For this short, bright arrangement, the hymn tune, Festal Song, has been chosen. This noble tune is probably the best-known tune from the pen of William Henry Walter (1825-1893), who, amongst other prestigious charges, served as the organist at Trinity Chapel at Columbia University beginning in 1865. Just a year prior to taking that appointment, he received an honorary doctorate from the same institution. Rise up, O saints of God! Have done with lesser things. Give heart and mind and soul and strength To serve the King of kings.