'Man's' in the Bible

They said, “You have not exploited us or oppressed us or taken anything at all from a man’s hand.”

David said to Saul, “Let no man’s courage fail because of him (Goliath). Your servant will go out and fight with this Philistine.”

(now the man’s name was Nabal and his wife’s name was Abigail. She was intelligent and beautiful in appearance, but the man was harsh and evil in his dealings; he was a Calebite).