There’s certainly not the build up to Amazing Grace, the movie on William Wilberforce, as there was to The Passion, but I note one similarity. Author John Piper wrote a companion book to both films. You can read Amazing Grace in the Life of William Wilberforce in PDF at desiringgod.org.

If you know about Wilberforce, you know he still speaks for our day.

The fatal habit of considering Christian morals as distinct from Christian doctrines insensibly gained strength. Thus the peculiar doctrines of Christianity went more and more out of sight, and as might naturally have been expected, the moral system itself also began to wither and decay, being robbed of that which should have supplied it with life and nutriment.

If you don’t know about Wilberforce (1759-1833), he is remembered for having “the grand object of [his] parliamentary existence” as the abolition of the slave trade. “If it please God to know me so far may I be the instrument of stopping such a course of wickedness and cruelty as never before disgraced a Christian country” (quoted from the preface of Piper’s book).