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2 Timothy 3:16-17 (New International Version 1984)

16 All Scripture is God-breathed and is useful for teaching, rebuking, correcting and training in righteousness, 17 so that the man of God may be thoroughly equipped for every good work.

From BibleGateway.com: http://www.biblegateway.com/passage/?search=2 Timothy 3:16-17&version=NIV1984