When I say unto the wicked, Thou shalt surely die; and thou givest him not warning, nor speakest to warn the wicked from his wicked way, to save his life; the same wicked man shall die in his iniquity; but his blood will I require at thine hand.
When I tell the bad person they will surely die and you don't warn them or try to make them change their ways, their bad life will lead to their death. Then I will hold you responsible for their death.