Watts, Isaac, 1674–1748, English clergyman and hymn writer, b. Southampton. He was one of the most eminent Dissenting divines of his day. As a pastor in London he was known for his sermons, but beginning in 1712 poor health caused him to live in semiretirement. His several hundred hymns embody a stern Calvinism assuaged with a gentleness and sympathy. The few hymns that are included in present-day hymnals are among the finest examples of English metrical hymnody. Those beginning "Jesus shall reign where'er the sun," "When I survey the wondrous cross," "Joy to the world," and "O God, our help in ages past," appeared in his Psalms of David Imitated (1719).