Why should he?
For gods as well as men hate the lie in the soul, or principle of falsehood; and as for any other form of lying which is used for a purpose and is regarded as innocent in certain exceptional cases--what need have the gods of this?
For they are not ignorant of antiquity like the poets, nor are they afraid of their enemies, nor is any madman a friend of theirs.

God then is true, he is absolutely true; he changes not, he deceives not, by day or night, by word or sign.

This is our second great principle--God is true.

Away with the lying dream of Agamemnon in Homer, and the accusation of Thetis against Apollo in Aeschylus...
In order to give clearness to his conception of the State, Plato proceeds to trace the first principles of mutual need and of division of labour in an imaginary community of four or five citizens.

Gradually this community increases; the division of labour extends to countries; imports necessitate exports; a medium of exchange is required, and retailers sit in the market-place to save the time of the producers.
These are the steps by which Plato constructs the first or primitive State, introducing the elements of political economy by the way.