Verses with the word reprove in the New Testament (3 verses):

John 16:8
And when he is come, he will reprove the world of sin, and of righteousness, and of judgment:

Ephesians 5:11
And have no fellowship with the unfruitful works of darkness, but rather reprove them.

2 Timothy 4:2
Preach the word; be instant in season, out of season; reprove, rebuke, exhort with all longsuffering and doctrine.