'Practice' in the Bible

David answered, "Against the Negev of Judah, against the Negev of the Jerahmeelites, and against the Negev of the Kenites." David did not leave a man or woman alive to bring to Gath. He told himself, "Otherwise, they'll say, "This is what David is doing, and this has been his practice all the time he has lived in Philistine territory.'"