Jehovah appointed Ezekiel as a figurative “watchman to the house of Israel.” – ???

[Bible Speaks]

The Watchman’s Heavy Responsibility Literal watchmen were often stationed on the city walls and towers to warn of approaching danger. Jehovah appointed Ezekiel as a figurative “watchman to the house of Israel.”

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Jehovah appointed Ezekiel as a watchman – Eze.33:7.

Eze 33:8, 9—The watchman avoided bloodguilt by sounding the warning

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Jehovah raised up prophets who served as figurative watchmen to the nation of Israel (Jer 6:17), and they, in turn, sometimes spoke of watchmen in a symbolic way. (Isa 21:6, 8; 52:8; 62:6; Ho 9:8) 

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These prophet-watchmen had the responsibility to warn the wicked of impending destruction, and if they failed to do so, they were held accountable. Of course, if the people were unresponsive and failed to heed the warning, their blood was upon themselves. (Eze 3:17-21;33:1-9) 

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An unfaithful prophet was about as worthless as a blind watchman or a voiceless dog. —Isa 56:10.

https://wol.jw.org/en/wol/tl/r1/lp-e?q=watchman