For there must be also factions among you, that they that are approved may be made manifest among you.

For divisions are necessary among you, in order that those who have God's approval may be clearly seen among you.

διοτι ειναι αναγκη να υπαρχωσι και αιρεσεις μεταξυ σας, δια να γεινωσι φανεροι μεταξυ σας οι δοκιμοι.

For there must be also heresies among you, that they which are approved may be made manifest among you.