What is God? is the first title in Etan Boritzerâs best selling What is? series of Life Concepts books on character education and social issues. What is God? is an introduction to the comparative study of major worldâs religions. Author Boritzer explores the different teachers and books available for trying to answer one of âthe biggest question of allâ in a way that teaches respect and acceptance for the diversity and the similarities of views on this difficult topic.