Greek

ὅτε δὲ ὁ υἱός σου οὗτος καταφαγών τὸν βίον μετὰ πορνῶν ἦλθεν ἔθυσας αὐτῷ σιτευτὸν μόσχον

Transliterated

hote de ho huios sou houtos kataphagōn ton bion meta pornōn ēlthen ethysas autō siteuton moschon

Literal English

when however - son of You this [man] having devoured the livelihood with prostitutes [that] came you have killed to Him fattened calf
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