It is said of these “Chinese gods of the threshold,” that “in full stature, and presumably in primeval strength, they flank the doors of monasteries and the entrances to the halls of justice. Much reduced in size and perched high on shelves, they face each other in the vestibules of the Chinese home; and in their most diminutive aspect they become little images, occasionally two-headed, which are carried about the person as charms, or hang from the eaves of Chinese houses.”[256]
Over the doors of almost all the houses of Japan are to be seen small prints of the “gigantic _Ni-o_, the Booddhist Gog and Magog,” who are supposed to guard the entrance way of the holy places.[257] Private buildings as well as public need this spiritual protection.
The inscriptions at the doorways of the houses of ancient Egypt showed that every building was “placed under the protection of a tutelary deity.” This custom “is retained by the modern Egyptians in the protecting genius said to preside over the different quarters of Cairo.”[258]
Tertullian, a Christian Father who wrote before the close of the second century, in warning believers against the seducements of idolatry, emphasized the clustering of deities at the doors and gates in the religions of Greece and Rome.[259] He says that “among the Greeks ... we read of Apollo Thyræus (that is, of the door), and the Antelii (or, Anthelii) demons, as presiders over entrances;” while among the Romans there are other “gods of entrances; Cardea (Hinge-goddess), called after hinges; and Forculus (Door-god) after doors; and Limentinus (Threshold-god) after the threshold; and Janus (Gate-god) himself after the gate.”
Although a Christian might not recognize these gods as gods, he is told to beware lest he seem to give them honor by adorning his gates with lamps or wreaths. “Indeed, a Christian will not even dishonor his own gate with laurel crowns,” says Tertullian, “if so be he knows how many gods the devil has attached to doors.” And his words of warning are: “Since there are beings who are adored in entrances [doorways], it is to them that both the lamps and laurels will pertain. To an idol you will have done whatever you shall have done to an entrance [or doorway].” “If you have renounced [heathen] temples, make not your own gate a [heathen] temple.” Yet, in proof of the prevalence of this heathen custom among Christians, Tertullian testifies: “‘Let your works shine,’ says He; but now all our shops and gates shine! You will now-a-days find more doors of heathens without lamps and laurel-wreaths than of Christians.”