History ping!
In the tautology of Protestant education there is a tendency to believe that Church doctrines emerged at the first Pentecost wholly intact awaiting only the Reformation to add their brilliance to it. Nothing could be further from the truth.
The Early Church Fathers taught that Catholic doctrine was more like a sculpture than a painting. Just as a stone must be challenged by a hammer and chisel to reveal the complete beauty hiding within it, Orthodoxy must be challenged by controversy and heresy to reveal the complete beauty previously hidden. It is not what the artist or the reformer adds to doctrine that strengthens and reveals it, but it is what is stripped away over time that reveals it.
Over time, each of the Councils stripped away heresy, error and uncertainty, adding to the understanding. They added nothing new, the Church doctrine was always there, it was just clouded.
Peace be with you.
Are you doing OK? Just stormy where you are, no huge drama I hope?