Isaiah 21:6
6 For thus the Lord said to me:
“Go, set a watchman;
let him announce what he sees.
Isaiah 52:8
8 The voice of your watchmen—they lift up their voice;
together they sing for joy;
for eye to eye they see
the return of the Lord to Zion.
Isaiah 56:10
10 His watchmen are blind;
they are all without knowledge;
they are all silent dogs;
they cannot bark,
dreaming, lying down,
loving to slumber.