Christians engage in apologetics when they build bridges to faith. This, Alister McGrath maintains, is both a science and an art. Apologetics is a science, because it vigorously grounded in Christianity, demonstratring and defending its truth. Equally, however, it is a craft - a creative attempt to marry the gospel proclamation with the needs and concerns of flesh-and-blood people. Apologetics is therefore a vital and necessary part of the equipment of all Chrstians everywhere, above all those concerned with preaching and evangelism.