Strong G703 ἀρετή aretē · virtue

2 Peter

1. 2 Peter 1:3
   According as his divine power hath given unto us all things that pertain unto life and godliness, through the knowledge of him that hath called us to glory and virtue:
2. 2 Peter 1:5
   And beside this, giving all diligence, add to your faith virtue; and to virtue knowledge;