'Warning' in the Bible

Immediately Jesus sent the man away with a very strong warning.

Therefore be alert, remembering that night and day for three years I did not stop warning each one of you with tears.

envying, murder, drunkenness, carousing, and similar things. I am warning you, as I had warned you before: Those who practice such things will not inherit the kingdom of God!

Those guilty of sin must be rebuked before all, as a warning to the rest.