'Watchman' in the Bible

"Son of man, I have appointed you [as] a watchman for the house of Israel. When you hear a word from my mouth, then you must warn them from me.

"Son of man, speak to {your people}, and you must say to them, 'A land, if I bring over it a sword and the people of the land take a man, one from their number, and they appoint him for them as a watchman,

And [as for] the watchman, if he sees the sword coming and {he does not blow} the horn, and the people [are] not warned, and [the] sword comes and it takes {their lives}, he will be taken through his guilt, but his blood from the hand of the watchman I will seek.'

"And you, son of man, I have made you a watchman for the house of Israel; if you hear a word from my mouth, then you must warn them from me.