Comparison: 1 Nephi 20:18 -> Isaiah 48:18

1 Nephi 20:18 (1830 edition page 54) Isaiah 48:18
O that thou hadst hearkened to my commandments! then had thy peace been as a river, and thy righteousness as the waves of the sea: O that thou hadst hearkened to my commandments! then had thy peace been as a river, and thy righteousness as the waves of the sea: