Martin Luther defended the use of "importance of images as tools for instruction and aids to devotion". He stated that "If it is not a sin but good to have the image of Christ in my heart, why should it be a sin to have it in my eyes?" He permitted the commissioning of new Lutheran altarpieces, including those of the Last Supper. The "Schneeberg Altarpiece" was placed at the high altar of St. Wolfgang im Salzkammergut and as Lutheran sacred imagery, reflects "the devotional forms of fifteenth- and early sixteenth century northern art". Lutheran sacred art, however, gained a new function in addition to exciting one's mind to thoughts of the Divine by also serving a didactic purpose.