Who kept david from taking vengeance on nabal for refusing to pay David's men?

Answer 1

Nabal's abusive words came to the attention of his wife, Abigail. Perhaps this was not the first time she had had to intercede and act as peacemaker for Nabal. In any case, Abigail acted immediately. Without telling Nabal, she gathered provisions-including five sheep and an abundance of food, and went out to meet David in the wilderness. (1 Samuel 25:18-20) When Abigail caught sight of David, she at once prostrated herself before him and warned David against taking hasty action that he would later regret. (1 Samuel 25:23-31)

Answer 2

Nabal's wife Abigail. 1 Samuel ch.25.

Link: More about King David