Bryan Owen writes in the Anglican Centrist:
As “the sufficient statement of the Christian faith,” the Nicene Creed underscores that there are boundaries and norms that define the Christian faith and that differentiate it from other possible faiths. Christianity is not a recipe for relativism, nor does it affirm subjectivism. It’s interesting in this regard to note that the English word “heresy” derives from the Greek hairein, meaning “to choose.” The Creed reminds us that Christianity is not an individualistic, “pick and choose what you like and discard the rest” faith. …
The faith of the Church as expressed in the Nicene Creed is the norm against which individual opinions and judgments are measured and found more or less adequate, or wrong.
See the full post at Anglican Centrist: The Creeds Are Essential