Set Apart And Observe

The year that is drawing toward its close has been filled with the blessings of fruitful fields and healthful skies.  To these bounties, which are so constantly enjoyed that we are prone to forget the source from which they come, others have been added, which are of so extraordinary a nature that they cannot fail to penetrate and even soften the heart which is habitually insensible to the ever-watchful providence of Almighty God.

No human counsel hath devised, nor hath any mortal hand worked out these great things.  They are the gracious gifts of the Most High God, who while dealing with us in anger for our sins, hath nevertheless remembered mercy.

It has seemed to me fit and proper that they should be solemnly, reverently, and gratefully acknowledged as with one heart and one voice by the whole American people.  I do, therefore, invite my fellow-citizens in every part of the United States, and also those who are at sea and those who are sojourning in foreign lands, to set apart and observe the last Thursday of November next as a Day of Thanksgiving and Praise to our beneficent Father who dwelleth in the heavens.

-- President Abraham Lincoln, in his Thanksgiving Proclamation (3 October 1863)