That here we have to do with a sun symbol is easily recognised wherever the simple, equally-armed cross appears duplicated with an oblique cross having the same point of intersection with it,
, or where it has the shape of a perpendicular which is cut symmetrically by two other lines crossing one another,
. And as a matter of fact this symbol of a sun shedding its rays is found upon numberless coins and illustrations, in which it is obvious that a reference to the sun is intended—e.g., upon the coins of the Egyptian Ptolemies, of the city Gods of Rome, of Augustus and the Flavian Cæsars. Here the Sun sign appears to have been adopted as a consequence of the fusing of the Sun Cult of later antiquity with the cult of the Emperor. Much more frequent, however, is the simple Tau, sometimes, indeed, in a shape with equal limbs (Greek cross), +, sometimes with the upright below lengthened (Latin cross), ✝, sometimes upright, sometimes oblique (St. Andrew’s cross), ×, sometimes, again, like the Greek letter Tau, Τ, sometimes in the shape of the so-called mirror of Venus, ♀, in which the ring plainly refers to the sun, sometimes in that of the Svastika, or hooked cross,
, sometimes with, sometimes without a circle, and so on. A form made up of the oblique and the ring cross of the Egyptians (so-called Key of the Nile) is the cross known under the description of the “Monogram of Christ,” ☧. According to the legend it was first employed by Constantine on account of his “vision”; and ecclesiastical writers, especially on the Catholic side, try even to-day to support this view, in spite of all facts. For this form of the cross also is clearly of pre-Christian origin, and had its prototype in the ancient Bactrian Labarum cross, as is found, for example, upon the coins of the Bactrian king Hippostratos (about 130 B.C.), of the Egyptian Ptolemies, of Mithridates, upon Attic Tetradrachma, &c.[27]
After the careful investigations on this subject which have been undertaken by French savants especially, there can be no doubt that we have before us in this so-called “seal” of the Gods and religious personalities a symbol of the creative force of nature, of the resurrection and the new life, a pledge of divine protection in this world and of everlasting blessedness after. As such it appears upon heathen sarcophagi and tombstones; and on this account in some cases their Christian character is too quickly assumed. Moreover, the cross has been preserved in present-day musical notation as the sign of the raising of a note,[28] while its use in the Mysteries and private Cult associations is authority for the statement that precisely in these the thought of a new-birth and resurrection in company with the hero of the association or God of the union stood as a central point of faith. One understands the painful feeling of the Christians at the fact that the private sign used by them and their special sacraments were in use among all the secret cults of antiquity. They could explain this to themselves only as the work of spiteful dæmons and an evil imitation of Christian usages on the heathens’ part.[29] In reality the symbol of the cross is much older than Christianity; and, indeed, the sign of the cross is found associated in a special manner with the cult of divinities of nature or life with its alternations of birth, blossoming, and decay, representatives of the fertility and creative force of nature, the Light-Gods and Sun-Gods subjected to death and triumphing victoriously over it. It is only as such, as Gods who died and rose again, that they were divinities of the soul and so of the Mysteries and pious fraternities. The idea of the soul, however, is found everywhere in nature religion considered as being connected with the warmth of life and with fire, just as the sun was honoured as the highest divinity and, so to speak, as the visible manifestation of the world-soul solely on account of its fiery nature. Should not, then, the symbol of life, which in its developed form plainly refers to the sun, in its simplest and original shape point to the fire, this “earliest phenomenon” of all religious worship?
Naturally, indeed, different views can be held as to what the various forms of the cross betoken. Thus, for example, according to Burnouf, Schliemann, and others, the Svastika represents the “fire’s cradle,” i.e., the pith of the wood, from which in oldest times in the point of intersection of the two arms the fire was produced by whirling round an inserted stick.[30] On the other hand, according to the view most widespread at the present day, it simply symbolises the twirling movement when making the fire, and on this, too, rests its application as symbol of the sun’s course.[31] Hochart considers the cross in the shape of the Greek Tau as the inserted stick (pramantha) of the Vedic priests.[32] Very likely, however, this form arose simply through the identity of sound between the Greek and Phœnician letter, the Greeks having interchanged the like-sounding foreign letter with their own Tau. That the cross generally speaking, however, is connected with the Fire Cult, and that both parts of the sign originally contained a reference to the pieces of wood (aranî) of which in most ancient times use was made to produce fire, has been placed beyond doubt by the investigations into the matter. This is confirmed inter alia by the use of the symbol in the worship of the Vestals, the Roman fire-priestesses. This is the explanation of the wide extent of the symbol of the cross. Not only among the peoples of antiquity and in Europe, but also in Asia among the Indians and Chinese, it is in use from ancient times. In America, too, among the Mexicans and Incas, it played a part in worship long before the arrival of Europeans. In the same way is explained the close association of that symbol with the priestly office and kingly dignity, which was itself often connected with that office; similarly the intimate relations between the sign of the cross and the Gods of Fertility, Vegetation, and Seasons. For all of these were, as representatives of the warmth of life and the soul’s breath, in their deepest nature, Fire-Gods special aspects, closer characterisations and connections of that one divinity, of whom the oldest form known to us is in the Vedic Agni, and in whose service the priests of all peoples and times grew to their overwhelming strength.[33] Julius Firmicus Maternus was thus quite right when he declared that Mithras, whose followers bore the sign of the cross upon their foreheads and at their communion-meal had the cross, imprinted upon the holy loaf, before their eyes, was an ancient Fire-God.[34] But if the cross is the symbol of fire and also of the Mediator God, who brings earth and heaven into connection, then the reason can be found why Plato in the “Timæus” makes the World Soul in the form of a Chi, i.e., an oblique cross, stretched between heaven and earth.[35] Then, indeed, it is not strange that the Christians of the first century regarded as an inspiration of the devil Plato’s doctrine of the mediatory office of the “double-natured” World Soul, which, according to that philosopher, was formed from a mixture of ideal and sensible matter. It is not strange that a Justin, “the most foolish of the Christian fathers” (Robertson), could actually assert that Plato borrowed the idea, as well as that of a world-conflagration, from—Moses.[36]
In the Old Testament also, as was shown above, we meet the cross. Here it served as a mark of recognition and distinction of the God-fearing Israelites from the heathen, and as a magic sign. With a similar significance we meet it again in the New Testament. In the Revelation of John it appears as “the seal (sphragís) of the living God.” By it here, too, are the chosen ones of Israel marked off from the rest of mankind whom judgment has overtaken. At the same time, it is said that this sign is imprinted upon the foreheads of the inhabitants of the true Jerusalem.[37] In the Epistles to the Galatians and Ephesians it is said of the believers in Christ that they were “sealed” before God by the mystic sign upon their foreheads, hands, or feet. The sign thus serves them as a pledge of redemption.[38] Again, in the Epistle of Barnabas ix. 8, the cross contained in the letter T is expressly interpreted as (charis) “grace.” Under the form of the Greek Tau the cross appears during the first century of the Christian era, especially among the Christians in Egypt, and according to many was a symbol of Adonis or Tammuz.[39] Now since the expressions xúlon and staurós, lignum and crux, were of double significance and denoted both the “seal” of religious salvation and the gibbet, it is possible that the two different significations became of themselves identical in the minds of the faithful.[40] This was possible so much the more easily since the biblical account placed by the side of the “tree of life” in Paradise a “tree of death,” the fateful “tree of the knowledge of good and evil,” which was supposed to have been accountable for the death of Adam and so of the whole of mankind, and as such made the comparison possible with the wood upon which Jesus died. We meet again with a special form of the cross in the old Assyrian or Babylonian so-called “mystical tree of mystery,” which was also a symbol of life. Among the Persians it appears to have had some reference to the holy Haoma tree; and here, too, as well as in India, where it was connected with the Bodhi tree, under which Sakyamuni by his devout humility rose to be a Buddha, it was represented in the artificial shape of a many-armed cross.[41]