http://www.catholicculture.org/culture/library/view.cfm?id=5926&repos=1&subrepos=0&searchid=375027
No reviewer to my knowledge has suggested that Mel Gibson read the “Summa Theologiae” before setting about to direct “The Passion of the Christ.”
But he must have read Question 48 of the third part of Aquinas’ “Summa.” There, Aquinas examines how the passion of Christ produced its effect — its efficiency, if you will.