Sam Cooke's song "Nearer to Thee" is a version of a traditional hymn Nearer, My God, to Thee by Sarah Adams, 1841 which is free domain. However, when comparing the two songs, the only similarity is the chorus hook line "Nearer My God to Thee". I would like to use Sam Cooke's version in my book, but I am unsure if I need to have persmission. I can not find anything to say that he has copyright. Can I use it? Thanks.