Wills was interested in how Lincoln used the ideas of birth, life, and death. Lincoln had described the nation as "brought forth", "conceived", and that shall not "perish". Others, such as Allen C. Guelzo, suggested that Lincoln's expression "four score and seven" was about the King James Version of the Bible's . There, man's life is described as "threescore years and ten; and if by reason of strength they be fourscore years".