What does 1 Samuel 25:3 mean?

The man's name was Nabal, and his wife's name was Abigail. She was smart and beautiful, but Nabal was harsh and mean in everything he did. He was a descendant of Caleb. 1 Samuel 25:3 - Modern Text Bible

(Nabal and Abigail are opposites: she's wise and kind, he's rude and selfish. The mention of Caleb hints at a noble heritage, but Nabal doesn't live up to it.)