''The Avatar is always a dual phenomenon of divinity and humanity; the Divine takes upon himself the human nature with all its outward limitations and makes them the circumstances, means, instruments of the divine consciousness and the divine power, a vessel of the divine birth and the divine works.
But so surely it must be, since otherwise the object of the Avatar's descent is not fulfilled; for that object is precisely to show that the human birth with all its limitations can be made such a means and instrument of the divine birth and divine works, precisely to show that the human type of consciousness can be compatible with the divine essence of consciousness made manifest, can be converted into its vessel, drawn into nearer conformity with it by a change of its mould and a heightening of its powers of light and love and strength and purity; and to show also how it can be done.
If the Avatar were to act in an entirely supernormal fashion, this object would not be fulfilled. A merely supernormal or miraculous Avatar would be a meaningless absurdity; not that there need be an entire absence of the use of supernormal powers such as Christ's so-called miracles of healing, for the use of supernormal powers is quite a possibility of human nature; but there need not be that at all, nor in any case is it the root of the matter, nor would it at all do if the life were nothing else but a display of supernormal fireworks.
The Avatar does not come as a thaumaturgic magician, but as the divine leader of humanity and the exemplar of a divine humanity. Even human sorrow and physical suffering he must assume and use so as to show, first, how that suffering may be a means of redemption,—as did Christ,—secondly, to show how, having been assumed by the divine soul in the human nature, it can also be overcome in the same nature,—as did Buddha. The rationalist who would have cried to Christ, "If thou art the Son of God, come down from the cross," or points out sagely that the Avatar was not divine because he died and died too by disease,—as a dog dieth,—knows not what he is saying: for he has missed the root of the whole matter.
Even, the Avatar of sorrow and suffering must come before there can be the Avatar of divine joy; the human limitation must be assumed in order to show how it can be overcome; and the way and the extent of the overcoming, whether internal only or external also, depends upon the stage of the human advance; it must not be done by a non-human miracle.''
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'' In the Avatar, the divinely-born Man, the real substance shines through the coating; the mark of the seal is there only for form, the vision is that of the secret Godhead, the power of the life is that of the secret Godhead, and it breaks through the seals of the assumed human nature; the sign of the Godhead, an inner soul-sign, not outward, not physical, stands out legible for all to read who care to see or who can see; for the Asuric nature is always blind to these things, it sees the body and not the soul, the external being and not the internal, the mask and not the Person. In the ordinary human birth the Nature-aspect of the universal Divine assuming humanity prevails; in the incarnation the God-aspect of the same phenomenon takes its place. In the one he allows the human nature to take possession of his partial being and to dominate it; in the other he takes possession of his partial type of being and its nature and divinely dominates it. Not by evolution or ascent like the ordinary man, the Gita seems to tell us, not by a growing into the divine birth, but by a direct descent into the stuff of humanity and a taking up of its moulds.''
Sri Aurobindo - Essays on the Gita