That s right, but the point of that image is that Christ shepherds his flock, i.e. that God loves and protects his creatures. God made men and women with minds that think. Despite what the animal rights crowd claims, human beings are different than sheep. If we do not use our minds to think for ourselves, we are not living up to our God-given potential. This is not to sanction Cartesian skepticism, doubting everything in the world and accepting nothing on authority.
Some knowledge can only, as a matter of practical reality, come from authority.
For example, I believe that the Yankees beat the Mets in the World Series, although I was not there and did not see it happen, because other people who were there tell me the Yankees won. I believe that based upon authority. Even so, authority can be examined. Some authorities are better, because more accurate and correct, than others. You listen to your doctor for advice on medicine.