Would you prefer to speak the truth to someone for their benefit of a situation? Or employ craftiness to set the outcome of a situation to your benefit?
Their is no virtue in using a cunning approach with people to manipulate a situation, sale, or decision in your favor. Anyone whose been on the losing side of a scam, half-truth, or political faction can witness there is no virtue in these tactics.
However, there is virtue in speaking the truth as best we know it to others. It's actually love to tell someone the truth even when its outcome can cause you jeopardy.
Can you recall a situation where someone took advantage of you and held the truth back? Now, can you think of a situation where someone told you the truth about a matter to your benefit and not their own? Certainly the person who told you the truth loves you or your mission more than themselves.
I can assure you that God is a witness to truth spoken through love to others. It's a great sign of courage to speak the truth when the truth may put you at risk.
Ephesians 4, verses 14 and 15 read, "Then we will no longer be infants, tossed back and forth by the waves, and blown here and there by every wind of teaching and by the cunning and craftiness of people in their deceitful scheming. Instead, speaking the truth in love, we will grow to become in every respect the mature body of him who is the head, that is, Christ."
If you want this virtue in your life, meditate on these verses and pray to God for guidance. It will change your life for the better, in a big way!