[5] The Edict of Milan, which was passed down to us in volume X of Eusebius of Ceasaria,[6] is truly the work of Constantine, and expresses his real views on religion and religious freedom. Noteworthy ...

In 313 AD, the Emperor Constantine issued the Edict of Milan, which accepted Christianity: 10 years later, it had become the official religion of the Roman Empire.

Miltiades was pope when Constantine issued the Edict of Milan, which gave Christianity a legal status in the Roman Empire, but Sylvester was the first pope fully to reign under its benefits.