Does the affirmation of the Good, according to Plato in The Republic imply anything about God, or the gods?

The way I read Plato, the ideal of the good is above the semi-material realm of the gods. The good would be something that gods would aspire to just as humanity would. There is certainly no clear implication that the existence of good implies the existence of gods. That argument is a later christian argument (most often identified with Anselm) who felt that god and good were equivalent perfections.