Which lines in this excerpt from john milton's paradise lost reflects the theme of humankind's childish innocence before the fall from paradise?

so passd they naked on, nor shund the sight
of god or angel, for they thought no ill:
so hand in hand they passd, the lovliest pair
that ever since in loves imbraces met,
adam the goodliest man of men since borne
his sons, the fairest of her daughters eve
under a tuft of shade that on a green
stood whispering soft, by a fresh fountain side
they sat them down, and after no more toil
of their sweet gardning labour then suffic'd
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