What does 1 Samuel 25:26 mean?

'Now, as surely as the Lord lives and as you live, the Lord has kept you from shedding blood and taking revenge yourself. May your enemies and anyone trying to hurt you end up like Nabal.' 1 Samuel 25:26 - Modern Text Bible

(Abigail points out that God has stopped David from making a terrible mistake, and she wishes his enemies would meet the same end as her husband.)