Eclogue 4, also called the Messianic Eclogue, imagines a golden age ushered in by the birth of a boy heralded as "great increase of Jove" (
magnum Iovis incrementum). The poet makes this notional scion of
Jove the occasion to predict his own
metabasis up the scale in
epos, rising from the humble
bucolic to the lofty range of the
heroic, potentially rivaling
Homer: he thus signals his own ambition to make Roman epic that will culminate in the
Aeneid. In the surge of ambition, Virgil also predicts defeating the legendary poet
Orpheus and his mother, the epic muse
Calliope, as well as
Pan, the inventor of the bucolic pipe, even in Pan's homeland of
Arcadia, which Virgil will claim as his own at the climax of his book in the tenth eclogue. Identification of the fourth eclogue's child has proved elusive, but one common solution is that it refers to the predicted child of the sister of
Octavian,
Octavia the Younger, who had married
Mark Antony in 40 BC. The poem is dated to 40 BC by the reference to the consulship of
Gaius Asinius Pollio, Virgil's patron at the time, to whom the eclogue is addressed. In later years, it was often assumed that the boy predicted in the poem was Christ. The connection is first made in the
Oration of Constantine appended to the
Life of Constantine (under the title
To the Assembly of Saints) by
Eusebius of Caesarea (a reading to which
Dante makes fleeting reference in his
Purgatorio, Canto XXII, verses 55 to 93, where the Latin poet
Statius says he converted to Christianity after reading the 4th Eclogue). Some scholars have also noted similarities between the eclogue's prophetic themes and the words of
Isaiah 11:6: "a little child shall lead". ==Eclogue 5==