'Warning' in the Bible

Jesus had been warning them, "Watch out! Beware of the yeast of the Pharisees and the yeast of Herod!"

Without warning a spirit takes control of him, and he suddenly screams, goes into convulsions, and foams at the mouth. The spirit mauls him and refuses to leave him.

So be alert! Remember that for three years, night and day, I never stopped tearfully warning each of you.

These things happened to them to serve as an example, and they were written down as a warning for us in whom the culmination of the ages has been attained.

I have already warned those who sinned previously and all the rest. Although I am absent now, I am warning them as I did on my second visit: If I come back, I will not spare you,