'Warn' in the Bible

“Son of man, I have appointed you a watchman to the house of Israel; whenever you hear a word from My mouth, warn them from Me.

When I say to the wicked, ‘You will surely die,’ and you do not warn him or speak out to warn the wicked from his wicked way that he may live, that wicked man shall die in his iniquity, but his blood I will require at your hand.

When I say to the wicked, ‘O wicked man, you will surely die,’ and you do not speak to warn the wicked from his way, that wicked man shall die in his iniquity, but his blood I will require from your hand.

But if you on your part warn a wicked man to turn from his way and he does not turn from his way, he will die in his iniquity, but you have delivered your life.