'Warning' in the Bible

“Son of man, I have appointed you as 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 certainly die,’ and you do not warn him or speak out to tell him to turn from his wicked way to save his life, that same evil man will die in his sin, but you will be responsible for his blood.

Again, when a righteous man turns from his righteousness (right standing with God) and sins, and I place an obstacle before him, he will die; since you have not warned him, he will die in his sin, and the righteous deeds which he has done will not be remembered; but you will be responsible for his blood.

So it will be a disgrace, a taunt, a warning and an object of horror to the [pagan] nations who surround you when I execute judgments against you in anger and in wrath and in raging reprimands—I, the Lord, have spoken.

then whoever hears the sound of the trumpet and does not take warning, and a sword comes and takes him away, his blood will be on his [own] head.

He heard the sound of the trumpet but did not take warning; his blood shall be on himself. But if he had taken warning, he would have saved his life.

“Now as for you, son of man, I have made you a watchman for the house of Israel; so you shall hear a message from My mouth and give them a warning from Me.