“Thus says the Lord: ‘Stand in the ways and see and ask for the old paths, where the good way is, and walk in it; then you will find rest for your souls… Also I set watchmen over you, saying, ‘Listen to the sound of the trumpet!’.” Jeremiah 6:16-17
The key defining Bible passage about watchmen is Ezekiel 33. Read it. The concept is simple. Watchmen are appointed to watch out for the safety of others. It’s their duty. If nothing else, every Christian, especially heads of family, has someone else God wants them looking out for.