Lennox begins Seven Days that Divide the World by establishing his reasons for taking on this hot-button topic. He says that an improper view of Christianity's relationship to science is an obstacle to the faith for some unbelievers, and for many believers, the earth-age controversy is disturbing in itself--with some Christians holding dogmatically to one particular interpretation, one that other sincere Christians completely disagree with. However, argues Lennox, there are excellent reasons why Christians shouldn't give up hope on this issue: