Psalm 127:1 (b) He is a type of the activity of a Christian leader in whom the power of GOD is lacking in his service.
Isaiah 21:11 (b) This watchman represents the servant of GOD who faithfully brings GOD's message to the people, without changing it or altering it.
Ezekiel 3:17 (b) In this case the watchman is a type of the prophet in Israel who is set to bring GOD's message of warning to the people. He watches for some word from Heaven and then watches for the opportunities to deliver it.