Ezekiel 33:2-5

“Son of man, speak to the sons of your people and say to them, ‘If I bring a sword upon a land, and the people of the land take one man from among them and make him their watchman, and he sees the sword coming upon the land and blows on the trumpet and warns the people, then he who hears the sound of the trumpet and does not take warning, and a sword comes and takes him away, his blood will be on his own head. He heard the sound of the trumpet but did not take warning; his blood will be on himself. But had he taken warning, he would have delivered his life.