Bible verses about Watchmen
(From Torrey's Topical Textbook)

Soldiers generally acted as Matthew 27:65,66 Citizens sometimes acted as Nehemiah 7:3 WERE STATIONED On watch towers II Kings 9:17; Isaiah 21:5 On the walls of cities Isaiah 62:6 In the streets of cities Psalms 127:1 Around the temple in Jerusalem on special occasions II Kings 11:6 Paraded the streets at night to preserve order Solomon 3:3; 5:7 IN TIME OF DANGER Increase in number Jeremiah 51:12 Vigilant night and day Nehemiah 4:9; Isaiah 21:8 Reported the approach of all strangers II Samuel 18:24-27; II Kings 9:18-20; Isaiah 21:6,7,9 Sounded an alarm at the approach of enemies Ezekiel 33:2,3 Vigilance of, vain without God's protection Psalms 127:1 Were relieved by turns Nehemiah 7:3 Danger of sleeping on their posts, referred to Matthew 28:13,14 Neglecting to give warning punished with death Ezekiel 33:6 Often interrogated by passengers Isaiah 21:11 ILLUSTRATIVE Of ministers Isaiah 5:28; 62:6; Ezekiel 3:17; Hebrews 13:17 (Blind,) of careless ministers Isaiah 56:10 (Looking for the morning,) of anxious waiting for God Psalms 130:5,6