Sift flour and soda, set aside. Cook water, dates, apple and raisins; bring to a boil. Simmer 3 minutes. Remove from heat and add the margarine and stir. Cool mixture and then add eggs, oatmeal and the dry ingredients; add the vanilla and nuts. Cover and refrigerate overnight. Drop on cookie sheets 2 inches apart. Bake in 350 degree oven for about 24 minutes. Store in the refrigerator in air tight container. May also add 1 teaspoon cinnamon to dry ingredients if desired.