The ethical power of the public sacrificial feast was based upon primal conceptions of the meaning of eating and drinking in common. To eat and drink with some one was at the same time a symbol and a confirmation of social community and of the assumption of mutual obligations; the sacrificial eating gave direct expression to the fact that the god and his worshippers are communicants, thus confirming all their other relations. Customs that to-day still are in force among the Arabs of the desert prove that the binding force resulting from the common meal is not a religious factor but that the subsequent mutual obligations are due to the act of eating itself. Whoever has shared the smallest bite with such a Bedouin, or has taken a swallow of his milk, need not fear him any longer as an enemy, but may be sure of his protection and help. Not indeed, forever, strictly speaking this lasts only while it may be assumed that the food partaken remains in the body. So realistically is the bond of union conceived; it requires repetition to strengthen it and make it endure.