Ezekiel 33:3-5

MLV(i) 3 if, when he sees the sword come upon the land, he blows the trumpet and warns the people, 4 then whoever hears the sound of the trumpet and takes no warning, if the sword comes and takes him away, his blood will be upon his own head.
5 He heard the sound of the trumpet and took no warning; his blood will be upon him. But if he had taken warning, he would have delivered his soul.