“The Book of Mormon changes the meaning of this statement by deleting the word ‘not’ before ‘increased the joy.’ The children of Israel, as promised to father Abraham (Abraham 2:9–10), will become numerous. Their joy will be great in the birth of the promised Christ child. Isaiah compares their joy to that received at the harvest festival, a time of national rejoicing, or when soldiers are victorious” (Brewster, Isaiah Plain and Simple, 88).