=Aim.= This episode has always been made use of, and rightly so, to impress the pupil with an appreciation of that courteous interest in the stranger and deferential attention to his wants and desires which constitute the true grace of hospitality, but an equally important educational value, perhaps from the point of view of the child an even more important one, is its power of impressing him with a sense of the mysterious possibilities of this world, in which any passing stranger that we entertain may turn out to be an angel in disguise, who will reveal himself to us and bless us if we do not turn him from our door. The story should leave the child with the feeling expressed in the exclamation, "Is anything too hard for the Lord". The teacher must of course not lose sight nor permit the child to lose sight of the story's connection with the main theme of the birth of Isaac, the significance of which we have already pointed out in the previous lesson. =Suggestions to the teacher.= This is a story whose educational value would only be lost by analyzing its moral as the beauty of a flower is destroyed by pulling it apart to show its structure. Tell the story simply and, as nearly as possible, in the language of the Bible itself. Be careful to give the story its characteristic picturesque setting, and begin therefore by contrasting modern conditions of housing and travel with those of Abraham's days, thus establishing a point of contact with the child's present experience. The following facts should be impressed on the child: 1. That Abraham's nomadic life, which was also the life led by many of his contemporaries, necessitated his dwelling in a tent which could be pitched wherever he wanted to make his home, 2. That traveling was to a large extent on foot over hot sand or stones, 3. That travelers were not sure of obtaining food at regular intervals, and 4. That it was consequently a great kindness to offer them rest and refreshment. After this introduction, tell the story of how Abraham one day saw three tired travelers on the road approaching in the direction of his tent and invited them to rest, refresh themselves and partake of food. Then, in a manner which would suggest that you are confiding to the class a great secret, tell them that these men whom Abraham had invited were not really men at all but angels of God.