Despite the differences in detail and in emphasis in Wesley's exposition of the two sacraments, there is an underlying unity in his sacramental theology. He regarded both sacraments as means whereby God could confer grace according to His promise, but yet insisted, that in order to prevent the means from being mistaken as ends, it was necessary for there to be an appropriation of the grace held out by the faith of the believer. Grace was not conferred IN SPITE OF MAN, but only with his co-operation. So human response was necessary for the efficacy of the sacraments, although man's actions were never thought of as meritorious works.