So the shepherd finds a quiet or still place for them to bed down. His concern for little details is the sign of his love for the flock. Sheep have actually been known to die of dehydration from lack of water, because the shepherd did not care properly for the flock. We have the thought here of restoring order to a flock that is perhaps going astray. If the sheep get spooked they need to be calmed down, to feel safe again.
Sheep can have nervous breakdowns too.
The shepherd talks to his sheep in a soothing voice. His voice put them at ease and they are restored to normal again. We need to listen to the voice that has never failed us. Not that of relatives, or a spouse, or friend or pastor, but the voice of the chief shepherd. Jesus will speak to us in those times if we listen.