It is true that some preach Christ out of envy and rivalry, but others out of goodwill. (NIV)
Some, it is true, [actually] preach Christ (the Messiah) [for no better reason than] out of envy and rivalry (party spirit), but others are doing so out of a loyal spirit and goodwill. (AMP)
Some indeed preach Christ even of envy and strife; and some also of good will: (KJV)