Ezekiel 33:1-6

And the word of the LORD came to me, saying, “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. But if the watchman sees the sword coming and does not blow the trumpet and the people are not warned, and a sword comes and takes a person from them, he is taken away in his iniquity; but his blood I will require from the watchman’s hand.’