As says the proverb of the ancients, Out of the wicked comes forth wickedness; but my hand shall not be on you.
"David told Saul the whole unvarnished truth; he told it to the person to whom it mattered most. Not to his comrades or to Saul’s friends or to the people of Israel, but to Saul himself. He came to terms with the individual with whom there was the battle." [Note: Swindoll, pp. 88, 89.] 