Ezekiel 33:2-4

2“Son of man, speak to the 1sons 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,

3and he sees the sword coming upon the land and 2blows on the trumpet and warns the people,

4then he who hears the sound of the trumpet and 3does not take warning, and a sword comes and takes him away, his 4blood will be on his own head.