Dogs are man's best friend but owner's will often share with you stories of how smart or dumb their dog is.
At times our two dogs, Sheba and Duchess can be 'dumb'. Duchess is the dumbest. Why? Here's the reasons: Duchess jumps on people which makes her a dumb dog. She barks at random objects that don't move so that makes her a dumb dog. She also is dumb because she chews up our granddaughters shoes. A common phrase is, "My dog is so , so dumb."
Sometimes people make jokes about their dumb dog. Just like people, dogs may have good things or bad thing shared about them. Still you and I can learn may lessons from our dogs.
God used the phrase in Isaiah 56:10,11
"His watchmen are blind, all of them know nothing, all of them are dumb dogs unable to bark, dreamers, lying down, who love to slumber; And the dogs are greedy, they are not satisfied. And they are shepherds who have no understanding; They have all turned to their own way. Each one is his unjust gain, to the last one
We can relate the trademark of the watchman to people today. Especially in regard to salvation and the commands of God.