Which US document starts When in the course of human events?

The document is the Declaration of Independence, written by Thomas Jefferson and presented to the Second Continental Congress by the "Committee of the Five" (Thomas Jefferson, John Adams, Robert Livingston, Benjamin Franklin and Roger Sherman) as support for Richard Henry Lee's motion on the table "That these United Colonies are, and of right ought to be, free and independent states". The Words, "When in the course of human events..." are the first seven Words of the Declaration. Jefferson, as the author, began the Declaration in this manner in order to begin the detailed justification of the unprecedented act of a subject colony to declare itself independent of the mother country.