How can a man add to faith, virtue, to virtue, knowledge, to knowledge temperance... then it means these entities are specific and must be recognized, how do you add them? How do you recognize them? How do you know you are lacking in one? 
"And beside this, giving all diligence, add to your faith virtue; and to virtue knowledge;
And to knowledge temperance; and to temperance patience; and to patience godliness;
And to godliness brotherly kindness; and to brotherly kindness charity."
— 2 Peter 1:5-7 (King James Version)