Joy to the World!: The Forgotten Meaning of Christmas by Isaac Watts and Paraclete Press. Barnes and Noble for $14.05. The beloved hymn "Joy to the World" was not originally a Christmas carol. Inspired by Psalm 98, Isaac Watts wrote the sont "to illuminate not so much the Advent of the Christ child, but Christ's soon-to-be, expe=cted, triumphant return to Earth". This thoughtful book ruminates upon the true meaning of christmas by exploring each verse of Watt's classic.