'Warn' in the Bible
Then the Lord spoke to Moses, “Go down, warn the people, so that they do not break through [the barriers around the mountain] to the Lord to see [Me], and many of them perish [as a result].
So now listen to their voice; only solemnly warn them and tell them the ways of the king who will reign over them.”
So the king sent word and called for Shimei and said to him, “Did I not make you swear by the Lord and solemnly warn you, saying, ‘Know for certain that on the day you leave [Jerusalem] and go anywhere, you shall surely die’? And you said to me, ‘The word (ruling) I have heard is good.’
Then the king said to him, “How many times must I warn you (make you swear an oath) to tell me nothing but the truth in the name of the Lord?”
Whenever any dispute comes to you from your brothers (relatives) who live in their cities, between blood and blood, between law and commandment, or between statutes and judgments, you are to warn [and instruct] them so that they may not be guilty before the Lord; otherwise [God’s] wrath will come on you and your brothers. Do this and you will not be guilty.
“I will not [I warn you] be partial to any man [that is, let my respect for you mitigate what I say];Nor flatter any man.
“Warn the [neighboring] nations now [that our enemy is coming]!Announce to Jerusalem,‘Besiegers are coming from a far country,And they lift their voices and shout against the cities of Judah.
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.
However, if you have warned the wicked and he does not turn from his wickedness or from his wicked way, he will die in his sin; but you have freed yourself [from responsibility].
However, if you have warned the righteous man not to sin and he does not sin, he will surely live because he took warning; also you have freed yourself [from responsibility].”
When I say to the wicked, ‘O wicked man, you will certainly die,’ and you do not speak to warn the wicked from his way, that wicked man will die because of his sin; but I will require his blood from your hand.
But if you on your part warn the wicked man to turn from his [evil] way and he does not turn from his [evil] way, he will die in his sin; but you have saved your life.