 This appeal to a God-given ‘higher’ cognitive faculty is found (in the early 12th Century) in al-Ghazâlî’s Deliverance from Error, where it provides the key to the ‘Sufi’ resolution of his religious crisis and his sceptical doubts about the deliverances of sense perception and unassisted human reason. Faith is thus understood as a kind of basic knowledge attended by a certainty that excludes doubt. But faith will not be exclusively cognitive, if, as in Calvin’s definition, faith-knowledge is not only ‘revealed to our minds’ but also ‘sealed upon our hearts’. For, on this model, faith will also have an affective/evaluative component that includes a welcoming of the knowledge received.