Shepherds often functioned as a door to the sheep pen. When the sheep came in the fold at night, they would pass the shepherd one at a time. He would examine them for cuts and abrasions. If necessary, he would treat them with oil to avoid infection. Then, when the whole flock was in, he would lay himself in front of the opening of the pen.” (Mark Moore) This is the picture of what Jesus does for his followers, his flock. He cares for them and protects them. With Jesus as the door, the sheep are safe.