Ezekiel 33:1-6

The word of the Lord came to me: O Mortal, speak to your people and say to them, If I bring the sword upon a land, and the people of the land take one of their number as their sentinel; and if the sentinel sees the sword coming upon the land and blows the trumpet and warns the people; then if any who hear the sound of the trumpet do not take warning, and the sword comes and takes them away, their blood shall be upon their own heads. They heard the sound of the trumpet and did not take warning; their blood shall be upon themselves. But if they had taken warning, they would have saved their lives. But if the sentinel sees the sword coming and does not blow the trumpet, so that the people are not warned, and the sword comes and takes any of them, they are taken away in their iniquity, but their blood I will require at the sentinel’s hand.