NET
8 For if these things are really yours and are continually increasing, they will keep you from becoming ineffective and unproductive in your pursuit of knowing our Lord Jesus Christ more intimately.
Darby
8 for these things existing and abounding in you make [you] to be neither idle nor unfruitful as regards the knowledge of our Lord Jesus Christ;
KJV
8 For if these things be in you, and abound, they make [you that ye shall] neither [be] barren nor unfruitful in the knowledge of our Lord Jesus Christ.