If you are looking for adult Sunday School material, written from a "means of grace", confessional point of view, I am enthusiastically suggesting that you take a look at the material being produced by the ARPs (Associate Reformed Presbyterian): The Associate Reformed Presbyterian Adult Quarterly, published quarterly under the editorship of Dr. Bill Evans (of Erskine College, SC). They come with a Teacher's Guide that is second to none as far as I know. Subscriptions are $2.00 per quarter plus pp. Teacher's Guides are $1.50 plus pp. If you are interested in seeing a copy, write Christian Education Ministries of the Associate Reformed Presbyterian Church, One Cleveland Street, Suite 110, Greenville, SC 29601 (Tel. 864-232-8297, Ext. 233).