Example image of eyePlorer eyePlorer map for 'Constantine I and Christianity': Battle of the Milvian Bridge Christianity Constantine I Roman Emperor Oriental Orthodoxy Orthodox Church Saint Religious persecution Helena (Empress) Early Christianity Edict of Milan Orthodoxy Great Fire of Rome Nero Roman Empire Tacitus Paul of Tarsus Saint Peter Imperial cult (ancient Rome) Persecution of Christians Treason Diocletian Galerius Tetrarchy In hoc signo vinces Labarum Arch of Constantine Licinius Christian Church State religion Christendom Basilica Theophanes the Confessor Cursus honorum Crucifixion Hanging Corpus Juris Civilis Constans Biblical canon Codex Alexandrinus Codex Sinaiticus Codex Vaticanus Peshitta Elevation of the Holy Cross Feast of the Cross Great Feasts of the Orthodox Church September 14 August 29 Calvary Holy Cross