Not to equate our own work with that of Ezekiel, but should we be any less than Ezekiel and not warn both the righteous who have turned away and the wicked who were not aware?
17 "Human being, I have appointed you to be a watchman for the house of Isra'el. When you hear a word from my mouth, you are to warn them for me.
18 If I say to a wicked person, 'You will certainly die'; and you fail to warn him, to speak and warn the wicked person to leave his wicked way and save his life; then that wicked person will die guilty; and I will hold you responsible for his death.
19 On the other hand, if you warn the wicked person, and he doesn't turn from his wickedness or his wicked way, then he will still die guilty; but you will have saved your own life.
20 Similarly, when a righteous person turns away from his righteousness and commits wickedness, I will place a stumblingblock before him - he will die; because you failed to warn him, he will die in his sin; his righteous acts which he did will not be remembered; and I will hold you responsible for his death.
21 But if you warn the righteous person that a righteous person should not sin, and he doesn't sin; then he will certainly live, because he took the warning; and you too will have saved your life." (CJB)