But perfect comes from Latin, and in Latin it means complete/finished. Unfortunately, English borrows foreign words but not the meaning. In English it is a label. In liturgical languages it has a meaning.
In litrugical languages (Hebrew, koine Greek, Latin and Church Slavonic) the word "perfect" means complete or finished. This is one of those reasons why the Bible must be read in those liturgical languages in order to be fully understood.
Sorry, I find that assertion to be more than a bit of the sort of perspective and attitude that I experience as haughty, pontifical, eccleastical, intellectual hogwash. I can agree that extensive knowledge of said languages and cultures can ENHANCE one's understanding of Scripture written originally in such languages. But essential is a stretch, to me. Holy Spirit is able to enlighten. AND, A GOOD MODERN TRANSLATION includes such meanings and shades of meanings--particularly a collection of such quality translations.
AMPLIFIED I COR 13:
10But when the complete and perfect (total) comes, the incomplete and imperfect will vanish away (become antiquated, void, and superseded).