Euthyphro has made what might appear to be a division of the genus justice into two species - the tending of gods and the tending of men. He has in fact allowed the holy to become the species of justice exemplified by Socrates' court case, and being unable to leave his own court case for a single minute, he has his exemplify justice as the tending of men. When Socrates begins to use "tending" (therapeia) as if it were expertise (techne), Euthyphro goes along with it, because he regards himself as an expert on the gods' attitude towards justice among men.
