DEUT839 A child's happiness is essential to his sense of security and development of character. Parental love expressed by the giving of gifts is an important contributor to each child's stability. The biblical injunction "And thou shalt rejoice in thy feast, thou, and thy son, and thy daughter" [this verse] mandates, according to rabbinic interpretation, the giving of gifts to children on festive occasions (Pesachim 109a).