'Warning' in the Bible

The ground had opened its mouth and swallowed them up, along with Korah. Also, that group died when the fire devoured 250 men as a warning sign,

So the man of God sent a message to the king of Israel, warning him, "Keep an eye on that area, because the Arameans are going to be there!"

You were patient with them for many years, warning them by your Spirit through your prophets. But they would not listen, so you turned them over to the control of people in other lands.

Whoever lives blamelessly will be delivered, but whoever is perverted will fall without warning.

After many rebukes, the stiff-necked man will be broken incurably, without any warning.

For this is what the LORD spoke to me, as his forceful hand was resting on me, and as he was warning me not to live the way this people were living:

Then the LORD said, "Just as my servant Isaiah has walked around naked and barefoot for three years as a sign and a warning for Egypt and Ethiopia,

To whom will I speak and give a warning so they'll listen? Look, their ears are closed, and they cannot hear. Look, this message from the LORD is contemptible to them; they don't delight in it.

For I've diligently warned your ancestors from the day I brought them out of the land of Egypt until now, regularly warning them, saying, "Obey me!"

then if anyone who hears the sound of the alarm does not heed the warning, when the sword arrives and destroys him, his shed blood will remain his own responsibility.

After all, he heard the alarm sounding, but did not heed the warning, so his shed blood will remain his own responsibility. If he had heeded the warning, he would have saved himself.

If that sentinel notices that violence is approaching, but does not sound an alarm, then because the nation does not take warning and the sword arrives and destroys their lives because of their guilt, I'll seek retribution for their shed blood from the one who was acting as sentinel.'"