Ezekiel 3:17
Son of man, I have made you a watchman to the house of Israel: therefore hear the word at my mouth, and give them warning from me.
Torrey's Topical Textbook—AKJV

Isaiah 62:6
I have set watchmen on your walls, O Jerusalem, which shall never hold their peace day nor night: you that make mention of the LORD, keep not silence,
Torrey's Topical Textbook—AKJV

Mark 13:34
For the Son of Man is as a man taking a far journey, who left his house, and gave authority to his servants, and to every man his work, and commanded the porter to watch.
Torrey's Topical Textbook—AKJV