O God, Our Help in Ages Past is a hymn by Isaac Watts that paraphrases Psalm 90. It originally consisted of nine stanzas. In present usage, however, the hymn is usually limited to stanzas one, two, three, five and nine. In 1738, John Wesley in his hymnal, Psalms and Hymns, changed the first line of the text from "Our God" to "O God." The hymn is often sung at festive occasions in England.