Theology
Milton was neither a clergyman nor a theologian; however, theology, and particularly English Calvinism, formed the palette on which he created his greatest thoughts. Milton thought about the great doctrines of the Church amidst the theological crosswinds of his age. The great poet was undoubtedly Reformed (though his grandfather, Richard "the Ranger" Milton had been Roman Catholic). However, Milton's Calvinism had to find expression in a broad-spirited Humanism. Like many Renaissance artists before him, Milton attempted to integrate Christian theology with classical modes. In his early poems, the poet narrator expresses a tension between vice and virtue, the latter invariably related to Protestantism. In Comus, Milton may make ironic use of the Caroline court masque by elevating notions of purity and virtue over the conventions of court revelry and superstition. In his later poems, Milton's theological concerns become more explicit.
His use of biblical citation was wide-ranging; Harris Fletcher, standing at the beginning of the intensification of the study of the use of scripture in Milton's work (poetry and prose, in all languages Milton mastered), notes that typically Milton clipped and adapted biblical quotations to suit the purpose, giving precise chapter and verse only in texts for a more specialized readership. As for the plenitude of Milton's quotations from scripture, Fletcher comments, "For this work, I have in all actually collated about twenty-five hundred of the five to ten thousand direct Biblical quotations which appear therein". Milton's customary English Bible was the Authorized King James. When citing and writing in other languages, he usually employed the Latin translation by Immanuel Tremellius, though "he was equipped to read the Bible in Latin, in Greek, and in Hebrew, including the Targumim or Aramaic paraphrases of the Old Testament, and the Syriac version of the New, together with the available commentaries of those several versions".
Milton embraced many heterodox Christian theological views. He has been accused of rejecting the Trinity, believing instead that the Son was subordinate to the Father, a position known as Arianism; and his sympathy or curiosity was probably engaged by Socinianism: in August 1650 he licensed for publication by William Dugard the Racovian Catechism, based on a non-trinitarian creed. Milton's alleged Arianism, like much of his theology, is still the subject of debate and controversy. Rufus Wilmot Griswold argued that "In none of his great works is there a passage from which it can be inferred that he was an Arian; and in the very last of his writings he declares that "the doctrine of the Trinity is a plain doctrine in Scripture." In Areopagitica, Milton classified Arians and Socinians as "errorists" and "schismatics" alongside Arminians and Anabaptists. A source has interpreted him as broadly Protestant, if not always easy to locate in a more precise religious category. In 2019, John Rogers stated, "Heretics both, John Milton and Isaac Newton were, as most scholars now agree, Arians."
In his 1641 treatise, Of Reformation, Milton expressed his dislike for Catholicism and episcopacy, presenting Rome as a modern Babylon, and bishops as Egyptian taskmasters. These analogies conform to Milton's puritanical preference for Old Testament imagery. He knew at least four commentaries on Genesis: those of John Calvin, Paulus Fagius, David Pareus and Andreus Rivetus.
Through the Interregnum, Milton often presents England, rescued from the trappings of a worldly monarchy, as an elect nation akin to the Old Testament Israel, and shows its leader, Oliver Cromwell, as a latter-day Moses. These views were bound up in Protestant views of the Millennium, which some sects, such as the Fifth Monarchists predicted would arrive in England. Milton, however, would later criticise the "worldly" millenarian views of these and others, and expressed orthodox ideas on the prophecy of the Four Empires.
The Restoration of the Stuart monarchy in 1660 began a new phase in Milton's work. In Paradise Lost, Paradise Regained and Samson Agonistes, Milton mourns the end of the godly Commonwealth. The Garden of Eden may allegorically reflect Milton's view of England's recent Fall from Grace, while Samson's blindness and captivity—mirroring Milton's own lost sight—may be a metaphor for England's blind acceptance of Charles II as king. Illustrated by Paradise Lost is mortalism, the belief that the soul lies dormant after the body dies.
Despite the Restoration of the monarchy, Milton did not lose his personal faith; Samson shows how the loss of national salvation did not necessarily preclude the salvation of the individual, while Paradise Regained expresses Milton's continuing belief in the promise of Christian salvation through Jesus Christ.
Though he maintained his personal faith in spite of the defeats suffered by his cause, the Dictionary of National Biography recounted how he had been alienated from the Church of England by Archbishop William Laud, and then moved similarly from the Dissenters by their denunciation of religious tolerance in England.
Milton had come to stand apart from all sects, though apparently finding the Quakers most congenial. He never went to any religious services in his later years. When a servant brought back accounts of sermons from nonconformist meetings, Milton became so sarcastic that the man at last gave up his place.Writing of the enigmatic and often conflicting views of Milton in the Puritan age, David Daiches wrote,Christian and Humanist, Protestant, patriot and heir of the golden ages of Greece and Rome, he faced what appeared to him to be the birth-pangs of a new and regenerate England with high excitement and idealistic optimism.A fair theological summary may be that John Milton was a Puritan, though his tendency to press further for liberty of conscience, sometimes out of conviction and often out of mere intellectual curiosity, made the great man, at least, a vital if not uncomfortable ally in the broader Puritan movement.