Appropriate Christianity consists of 28 chapters by 18 authors approaching contextualization in three dimensions: truth, allegiance and spiritual power. Over the years, there have been quite a number of helpful discussions of the contextualization of theological truth. Though we have been helped greatly by them, it is high time we began to deal also with allegiance and spiritual power, two additional dimensions that Jesus considered of great importance. Any adequate and appropriate treatment of the contextualization of biblical Christianity needs to deal with all three of these "crucial dimensions." For allegiance to Christ is the basis for all we do that makes us Christian, and Jesus was very much into spiritual power. If we are to be truly biblical, we must deal also with these areas.