The Second Day of July 1776, will be the most memorable Epocha, in the History of America. — I am apt to believe that it will be celebrated, by succeeding Generations, as the great anniversary Festival. It ought to be commemorated, as the Day of Deliverance by solemn Acts of Devotion to God Almighty. It ought to be solemnized with Pomp and Parade, with Shews, Games, Sports, Guns, Bells, Bonfires and Illuminations from one End of this Continent to the other from this Time forward forever more.

John Adams (1735–1826) American lawyer, Founding Father, statesman, US President (1797–1801)

Letter (1776-07-03, p.m.) to Abigail Adams
    (Source)

The rough draft read "... solemnized with Pomp, Shews, Games ..." It also did not have the final word "more."

Early printings of this letter (and that of the morning) changed the recipient to an unnamed male friend. They were used by some (given the date on them and references elsewhere in them) to argue that Independence Day should be celebrated on July 2nd; others published versions with the dates modified to align with a July 4th date for the holiday. What Adams actually wrote was not clarified until Charles Francis Adams (grandson of John and Abigail) published a record of his grandparents' correspondence in 1876.

For the record, Independence was voted on and approved by the Continental Congress on 1776-07-02, and the final text of the Declaration of Independence approved and signed on 1776-07-04. Adams was writing on the day in-between.