The phrase "blind sheep" refers to people who blindly follow others without thinking for themselves or questioning authority. They just do what they are told without using their own judgment or critical thinking. Full definition
This path seldom leads to a decent sale or decent writing, but most beginning writers still follow this path like blind sheep. (deanwesleysmith.com)
This «pastor» is a person no one should take spiritual leadership from, but it's obvious that this moron has a herd of blind sheep following in lock step with him. (religion.blogs.cnn.com)
Some Christians are aware of the story of Nimrod in Numbers, where all of those stories originate; but most are oblivious blind sheep following some Judas goat to the silence of the lambs. (religion.blogs.cnn.com)