Ezekiel 33:2-9

²"Son of man, speak to your people and say to them, If I bring the sword upon a land, and the people of the land take a man from among them, and make him their watchman; ³and if he sees the sword coming upon the land and blows the trumpet and warns the people; ⁴then if any one who hears the sound of the trumpet does not take warning, and the sword comes and takes him away, his blood shall be upon his own head. ⁵He heard the sound of the trumpet, and did not take warning; his blood shall be upon himself. But if he had taken warning, he would have saved his life. ⁶But if the watchman sees the sword coming and does not blow the trumpet, so that the people are not warned, and the sword comes, and takes any one of them; that man is taken away in his iniquity, but his blood I will require at the watchman's hand.

⁷"So you, son of man, I have made a watchman for the house of Israel; whenever you hear a word from my mouth, you shall give them warning from me. ⁸If I say to the wicked, O wicked man, you shall surely die, and you do not speak to warn the wicked to turn from his way, that wicked man shall die in his iniquity, but his blood I will require at your hand. ⁹But if you warn the wicked to turn from his way, and he does not turn from his way; he shall die in his iniquity, but you will have saved your life.