Cara deum suboles, magnum Iovis incrementum
(whatever may be its exact meaning(223)) appears an extreme exaggeration when specially applied to the actual son of a mortal father and mother. These difficulties have led some interpreters to suppose that the child spoken of is an ideal or imaginary representative of the future race. But if we look more closely at the poem, we find that the child is not really spoken of as the future regenerator of the age; he is merely the first-born of the new race, which was to be nearer to the gods both in origin and in actual communion with them. Again, the words
Pacatumque reget patriis virtutibus orbem(224)
would not convey the same idea in the year 40 B.C. as they would ten or twenty years later. At the time when the poem was written the consulship was still the highest recognised position in the State. The Consuls for the year, nominally at least, wielded the whole power of the Empire. The words 'reget orbem' remain as a token that the Republic was not yet entirely extinct. The child is called upon to prepare himself for the great offices of State in the hope that he should in time hold the high place which was now held by his father. The words 'patriis virtutibus' imply that he is no ideal being, but the actual son of a well-known father. Virgil takes occasion in this poem to commemorate the attainment of the highest office by his patron, to celebrate the birth of the son born in the year of his consulship, and at the same time to express, by mystical and obscure allusions, the trust that the peace of Brundisium was the inauguration of that new era for which the hearts of men all over the world were longing.
In turning to the second question, discussed in connexion with this Eclogue, the great amount and recondite character of Virgil's learning, especially of that derived from Alexandrine sources, must be kept in view. Macrobius testifies to this in several places. Thus he writes, 'for this poet was learned with not only a minute conscientiousness, but even with a kind of reserve and mystery, so that he introduced into his works much knowledge the sources of which are difficult to discover(225).' In another place he speaks of those things, 'what he had introduced from the most recondite learning of the Greeks(226).' And again he says, 'this story Virgil has dug out from the most recondite Greek literature(227).' It is indeed most improbable that Virgil had a direct knowledge of the Septuagint. If he had this knowledge it would have shown itself by other allusions in other parts of his works. But it is quite possible that, through other channels of Alexandrine learning, the ideas and the language of Hebrew prophecy may have become indirectly known to him. One channel by which this may have reached him would be the new Sibylline prophecies, manufactured in the East and probably reflecting Jewish as well as other Oriental ideas, which poured into Rome after the old Sibylline books had perished in the burning of the Capitol during the first Civil War.