What does 1 Samuel 25:39 mean?

And when David heard that Nabal was dead, he said, Blessed be Jehovah, that hath pleaded the cause of my reproach from the hand of Nabal, and hath kept back his servant from evil: and the evil-doing of Nabal hath Jehovah returned upon his own head. And David sent and spake concerning Abigail, to take her to him to wife.

And when David heard that Nabal was dead, he said, Blessed be the Lord, that hath pleaded the cause of my reproach from the hand of Nabal, and hath kept his servant from evil: for the Lord hath returned the wickedness of Nabal upon his own head. And David sent and communed with Abigail, to take her to him to wife.

And when David heard that Nabal was dead, he said, Blessed be Jehovah, that hath pleaded the cause of my reproach from the hand of Nabal, and hath kept back his servant from evil: and the evil-doing of Nabal hath Jehovah returned upon his own head. And David sent and spake concerning Abigail, to take her to him to wife.

And David, hearing that Nabal was dead, said, May the Lord be praised, who has taken up my cause against Nabal for the shame which he put on me, and has kept back his servant from evil, and has sent on Nabal's head the reward of his evil-doing. And David sent word to Abigail, desiring to take her as his wife.

and David heareth that Nabal <FI>is<Fi> dead, and saith, `Blessed <FI>is<Fi> Jehovah who hath pleaded the cause of my reproach from the hand of Nabal, and His servant hath kept back from evil, and the wickedness of Nabal hath Jehovah turned back on his own head;' and David sendeth and speaketh with Abigail, to take her to him for a wife.

And when David had heard that Nabal was dead, he said: Blessed be the Lord, who hath judged the cause of my reproach, at the hand of Nabal, and hath kept his servant from evil, and the Lord hath returned the wickedness of Nabal upon his head. Then David sent and treated with Abigail, that he might take her to himself for a wife.

And when David heard that Nabal was dead, he said, Blessed be Jehovah, who has pleaded the cause of my reproach from the hand of Nabal, and has kept back his servant from evil; but Jehovah has returned Nabal's evil upon his own head. And David sent and communed with Abigail, to take her as his wife.