Our Lord Himself makes a familiar use of the same image: "He calleth his own sheep by name, and leadeth them out. And when he putteth forth his own sheep, he goeth before them, and the sheep follow him: for they know his voice. And a stranger will they not follow, but will flee from him: for they know not the voice of strangers" (John x. 3-5). And again at verse 26: "Ye believe not, because ye are not of my sheep, as I said unto you. My sheep hear my voice, and I know them, and they follow me." Although the shepherds of our own country know their Sheep by sight, and say that there is as much difference in the faces of Sheep as of men, they have not, as a rule, attained the art of teaching their Sheep to recognise their names. This custom, however, is still retained, as may be seen from a well-known passage in Hartley's "Researches in Greece and the Levant:"-- "Having had my attention directed last night to the words in John x. 3, I asked my man if it were usual in Greece to give names to the sheep. He informed me that it was, and that the sheep obeyed the shepherd when he called them by their names. This morning I had an opportunity of verifying the truth of this remark. Passing by a flock of sheep, I asked the shepherd the same question which I had put to the servant, and he gave me the same answer. I then bade him call one of his sheep. He did so, and it instantly left its pasturage and its companions, and ran up to the hands of the shepherd, with signs of pleasure, and with a prompt obedience which I had never before observed in any other animal. "It is also true that in this country, 'a stranger will they not follow, but will flee from him.' The shepherd told me that many of his sheep were still wild, that they had not learned their names, but that by teaching them they would all learn them." Generally, the shepherd was either the proprietor of the flock, or had at all events a share in it, of which latter arrangement we find a well-known example in the bargain which Jacob made with Laban, all the white Sheep belonging to his father-in-law, and all the dark and spotted Sheep being his wages as shepherd. Such a man was far more likely to take care of the Sheep than if he were merely a paid labourer; especially in a country where the life of a shepherd was a life of actual danger, and he might at any time be obliged to fight against armed robbers, or to oppose the wolf, the lion, or the bear. The combat of the shepherd David with the last-mentioned animals has already been noticed.