Theodosius Establishes Christianity as State Religion

Name: Theodosius Establishes Christianity as State Religion
Start: 380
End: 392

Type Event Region Rome Time 380–392

Between 380 and 392 CE, Eastern Roman Emperor Theodosius I made Nicene Christianity the Roman Empire's sole legal religion through the Edict of Thess…

Timeline

380Thessalonica · MacedoniaTheodosius I jointly issued the edict with Gratian and Valentinian II, requiring subjects to profess the Nicene orthodox faith of the Father, Son, and Holy Spirit as consubstantial, with violators treated as traitors.
391–392Rome · LazioTheodosius issued decrees banning public pagan sacrifices; in 391 the Vestal Virgins' altar in the Senate was extinguished, and in 392 he ordered pagan temples closed, giving Christianity an exclusive status in imperial law.

Sources

Theodosius I https://www.britannica.com/biography/Theodosius-I
The Making of Late Antiquity — Peter Brown (1978)