 And what would happen, all these sheep would intermingle and you might have seven, eight, nine hundred, thousand, fifteen hundred sheep all drinking at the same area. Now they didn't mark sheep back then, they didn't brand sheep, they didn't put tags on their ears like we do cattle today. So how in the world could the shepherd separate his sheep from all the other hundreds of sheep? It was actually very simple what the shepherd would do when he was ready to leave. He would just simply call out to his sheep. Now all of the sheep would hear his voice.