Theseven books of the Diuinae institutiones , the most important work by Lactantius, the Christian author and contemporary of Constantine the Great, are an apologetic treatise that includes a defense of Christianity and a criticism of pagan religion, philosophy and morals. The fourth fascicle, consisting of book VII (Christian eschatology), an appendix (Latin translations of Greek quotations) and indexes,continues the critical edition of this work, of whichfascicle 1, containing books I and II as well as a praefatio, was published in 2005,fascicle 2 with books III and IV in 2007 and fascicle 3 with books V and VI in 2009.