This painting is part of an altarpiece, the main panel of which depicts The Virgin & Child. This section shows Saint John the Baptist; other parts of the altarpiece show Saints Peter, Philip & John the Evangelist. John the Baptist was the prophet who foretold the coming of Jesus. He was related to Jesus through his mother Elizabeth, who was a cousin of the Virgin Mary. John lived as a hermit in the desert, preaching & baptising people in the River Jordan
- it is here that Jesus came to him to be baptised & John declared him the Son of God. In this painting, he is depicted with a scroll upon which is inscribed ECCE. AGNVS. DEI (' Behold, the Lamb of God').