ᾄδεις ὥσπερ εἰς Δῆλον πλέων → you sing as if you were sailing to Delos
ἀλάξευτος: -ον, (λαξεύω) μὴ λελαξευμένος, Ἰωσ. Ὑμνογραφ. 985Α.