In fact, its age makes it more similar to the sacred books of the great religions than to the other national constitutions. Great power and wisdom come from the sacred books because they are never rewritten. Great religions have great staying power. Sometimes in history they have too much. Revolutions then arise against them.
Some revolutions make great changes but then restore the sacred books in new form.
The Protestant Reformation rose up against the Roman Catholic Church through the vernacular Bible. The French Revolution overthrew the Church but Napoleon quickly restored it. The Russian Revolution overthrew the Orthodox Church but three-quarters of a century later it was restored. The American Constitution has the staying power of great religions. But it also has the capacity to keep changing, as is the case with shorter-lasting constitutions based on jurisprudence.