It is probably not a stretch to say that the task of Christian apologetics has been necessary since the Fall. Fallen man rejects God and in his rejection casts doubt on the validity of Christianity. If you need evidence for this then just pick up any recently published book from the “new atheists” (Richard Dawkins, Christopher Hitchens, Daniel Dennett or Sam Harris). If reading any one of these authors does not impress upon you the necessity of apologetics then not much will.
Throughout the history of apologeitcs, and more so within the last 50 years, there have been many formidable Christian apologists. These defenders of the Christian faith have serviced the church and any inquiring unsaved minds with many written apologetic works. Many of these works deal with single issues within the field of apologetics such as methodology, defending its importance or necessity, dealing with specific issues like the resurrection of Christ or the five theistic arguments from natural theology, addressing and answering Old and New testament issues and a host of other related subjects.
Douglas Groothuis is a long time Christian apologist, author and professor of philosophy at Denver Seminary and Metropolitan State College of Denver. He has recently written a new book on Christian apologetics titled Christian Apologetics: A Comprehensive Case for Biblical Faith. Groothuis does something that few if any other apologetic works have ever done. As the subtitle indicates, Groothuis has written a truly comprehensive book on apologetics, weighing in at 730 plus pages. Granted, given the vast field of apologetics, what is covered in this book is not exhaustive nor is it intended to be. However, Groothuis has provided us with a magnificent introductory work on Christian apologetics that will serve the laymen, pastor and student alike. Christian Apologetics is a go-to guide for not only the beginning student of apologetics but the more seasoned apologists among us.