Since Euthyphro claims to know about divine things - the holy and the unholy (hosion and anosion) - accurately, Socrates prepares the ground for a discussion of the holy by pretending to become a pupil of Euthyphro (although Euthyphro is not a sophist) as if in order to defend himself against Meletus, either in his trial, or in a counter-trial. Socrates and Euthyphro are both extreme characters, something which needs to be taken into account: they are deigmata of paradeigmata of "to hosion", and aspects of a concept are as clear-cut as the concept itself.
