The matter was not completely resolved until the First Council of Nicaea in 325.

This was decided at the First Council of Nicaea in 325.

Constantine was associated with the holding of the First Council of Nicaea in 325.

The matter was next addressed at the First Council of Nicaea.

That there could only be one bishop per city would be defined into church law by the First Council of Nicaea in 325.

Before the idea was made dogma, at the First Council of Nicaea, there were also other ideas on how to solve the problem.

In 325, the First Council of Nicaea agreed on how to organize the church.

In 325, he served as Alexander's secretary at the First Council of Nicaea.

The first was present at First Council of Nicaea in 325.

The second was the First Council of Nicaea, which settled the debate on the Trinity.