What exactly was the black-winged god of desire? The secrets that masterwork uncovers about the rebellious artist

The young boy cries out as his head is firmly held, a large thumb pressing into his cheek as his father's mighty hand holds him by the throat. This moment from The Sacrifice of Isaac appears in the Florentine museum, creating distress through Caravaggio's chilling rendition of the suffering youth from the biblical account. The painting appears as if Abraham, instructed by the Divine to kill his son, could break his neck with a single twist. Yet Abraham's chosen approach involves the silvery grey knife he holds in his other palm, ready to slit Isaac's throat. A definite aspect remains – whoever modeled as the sacrifice for this astonishing piece displayed remarkable expressive ability. There exists not just dread, shock and begging in his darkened gaze but additionally deep sorrow that a guardian could betray him so utterly.

He took a familiar scriptural tale and transformed it so fresh and raw that its terrors seemed to unfold directly in view of you

Viewing before the artwork, viewers recognize this as a real face, an accurate depiction of a adolescent subject, because the identical boy – recognizable by his disheveled locks and almost dark pupils – appears in two other paintings by the master. In each case, that highly emotional face dominates the composition. In Youth With a Ram, he peers mischievously from the darkness while embracing a lamb. In Amor Vincit Omnia, he grins with a toughness learned on Rome's alleys, his black plumed wings demonic, a unclothed child running chaos in a affluent residence.

Victorious Cupid, currently exhibited at a British gallery, represents one of the most discomfiting artworks ever painted. Viewers feel totally disoriented gazing at it. The god of love, whose arrows inspire people with often agonizing desire, is portrayed as a very real, vividly illuminated nude form, straddling toppled-over objects that comprise stringed instruments, a music score, metal armor and an builder's ruler. This pile of items resembles, deliberately, the mathematical and construction equipment strewn across the ground in Albrecht Dürer's print Melancholy – save here, the gloomy mess is caused by this grinning Cupid and the turmoil he can release.

"Love sees not with the vision, but with the soul, / And therefore is feathered Love depicted blind," wrote the Bard, just before this painting was created around the early 1600s. But the painter's god is not unseeing. He stares straight at the observer. That countenance – sardonic and ruddy-faced, staring with bold assurance as he struts naked – is the identical one that screams in fear in Abraham's Test.

When Michelangelo Merisi da Caravaggio created his three images of the identical distinctive-appearing youth in the Eternal City at the dawn of the 17th century, he was the most acclaimed sacred painter in a city ignited by Catholic revival. Abraham's Offering reveals why he was commissioned to adorn sanctuaries: he could take a scriptural narrative that had been portrayed many occasions before and make it so fresh, so unfiltered and visceral that the horror appeared to be happening immediately before you.

However there was another side to the artist, apparent as soon as he arrived in the capital in the winter that ended 1592, as a painter in his initial twenties with no mentor or supporter in the city, only talent and boldness. Most of the paintings with which he captured the holy metropolis's attention were anything but holy. That could be the absolute first resides in London's art museum. A youth parts his crimson mouth in a scream of pain: while stretching out his dirty digits for a fruit, he has rather been attacked. Youth Bitten by a Reptile is eroticism amid squalor: viewers can see the painter's gloomy chamber reflected in the murky liquid of the glass vase.

The adolescent sports a pink blossom in his hair – a symbol of the sex commerce in Renaissance painting. Venetian artists such as Tiziano and Jacopo Palma portrayed prostitutes grasping blooms and, in a painting destroyed in the WWII but known through images, Caravaggio represented a renowned woman courtesan, holding a posy to her bosom. The message of all these floral signifiers is clear: sex for purchase.

How are we to interpret of Caravaggio's erotic portrayals of youths – and of one adolescent in particular? It is a question that has split his commentators since he gained mega-fame in the twentieth century. The complex past reality is that the painter was not the homosexual icon that, for example, the filmmaker presented on film in his twentieth-century film Caravaggio, nor so completely pious that, as some art historians improbably assert, his Boy With a Basket of Fruit is in fact a likeness of Christ.

His early works indeed offer explicit sexual implications, or including offers. It's as if Caravaggio, then a destitute young artist, identified with the city's prostitutes, offering himself to survive. In the Florentine gallery, with this idea in consideration, observers might look to an additional initial work, the 1596 masterwork the god of wine, in which the god of alcohol gazes coolly at you as he begins to undo the dark sash of his robe.

A few years after the wine deity, what could have driven Caravaggio to create Amor Vincit Omnia for the artistic patron the nobleman, when he was at last becoming almost respectable with important ecclesiastical commissions? This profane non-Christian deity resurrects the sexual challenges of his initial paintings but in a increasingly intense, uneasy way. Fifty years later, its secret seemed clear: it was a portrait of the painter's companion. A English traveller viewed the painting in about the mid-seventeenth century and was informed its figure has "the physique and countenance of [Caravaggio's|his] owne boy or servant that slept with him". The name of this boy was Francesco.

The artist had been dead for about 40 annums when this account was documented.

Lucas Miller
Lucas Miller

A passionate travel writer and local expert, Marco shares his love for Udine's countryside and its rich history through engaging stories and practical guides.