Beyond these small adaptations, medieval Christian chivalry was still primarily a traditional code of honor. Knights vowed to defend their own honor and the honor of their fellow knights. If his honor, or reputation, was besmirched by an equal, a knight had a duty to retaliate. For the medieval knight, might still made right. A knight could indeed be lacking in virtue, but as long as he could defeat the man who brought to light his moral defect in “single combat,” he remained a man of honor. The story of Sir Lancelot’s adulterous relationship with King Arthur’s wife, Guinevere, illustrates this; when the other knights discovered his sin, Lancelot insisted that his indiscretion didn’t exist because he was able to fight and best his accusers.