"Joy to the World" is an English Christmas carol. It was written in 1719 by the English minister and hymnwriter Isaac Watts, and its lyrics are a Christian reinterpretation of Psalm 98 and Genesis 3. The carol is usually sung to an 1848 arrangement by the American composer Lowell Mason. Since the 20th century, "Joy to the World" has been the most-published Christmas hymn in North America. Wikipedia