Jamieson, Fausset and Brown on 1 Samuel 25:32-35

32-35. David said to Abigail, Blessed be the Lord--Transported by passion and blinded by revenge, he was on the eve of perpetrating a great injury. Doubtless, the timely appearance and prudent address of Abigail were greatly instrumental in changing his purpose. At all events, it was the means of opening his eyes to the moral character of the course on which he had been impetuously rushing; and in accepting her present, he speaks with lively satisfaction as well as gratitude to Abigail, for having relieved him from bloodshed.

1Sa 25:36-44. Nabal's Death.