Lamb
Christ as Lamb of God—John’s verbal acclamation in John 1:29 made visible.
New Testament
Saint John the Baptist
A lamb and a reed cross often accompany John. Look for his pointing finger, which directs the viewer towards Christ.
Iconographic Attributes
Iconographic field guide
John’s dual feasts (birth and death) are unique among saints. Artists exaggerate his weathered body to contrast Christ’s perfection in Baptism panels. The Agnus Dei lamb may sit on the book he holds or on the staff banner. Either way, it is Christological, not pastoral decoration. The Evangelist John the Apostle is younger, clean-shaven or lightly bearded, with eagle and Gospel book—never camel skin. Confusing the two Johns is the most common error in museums.
Christ as Lamb of God—John’s verbal acclamation in John 1:29 made visible.
Processional staff with “Ecce Agnus Dei” scroll—medieval and Renaissance standard.
Wooden rod of wilderness preacher; may merge with cross staff.
Wild, often unkempt hair and beard signal desert asceticism versus courtly saints.
“Ecce Agnus Dei” staff
Biography
Matthew describes John preaching in the wilderness, wearing camel’s hair and baptising Jesus in the Jordan. The Gospel of John also records his identification of Jesus as the Lamb of God. The lamb and a slender cross help distinguish him in art.
Matthew 3; Mark 1; Luke 1–3; John 1:29–34; Josephus, Antiquities 18.5.2; Byzantine and Ethiopian liturgical icons.
A prophet of repentance who baptized in the Jordan, recognized Jesus as Lamb of God, and was executed by Herod Antipas at Machaerus after Salome’s petition. His movement predates and parallels early Christianity; Gospels present him as Elijah-like forerunner.
Ascetic preacher: locusts and wild honey, leather belt, hairshirt. His entire iconography aims at another—Christ—so the pointing finger is theological, not incidental.
Beheaded; head on platter appears in Salome scenes—distinct from his portrait attributes (lamb, staff).
Hairy, muscular ascetic in camel or animal skin, cross-shaped staff with banner, lamb, pointing right hand, sometimes wings in Orthodox “Angel of the Desert” types.
The Beheading of Saint John the Baptist — Caravaggio (1608)
Martyrdom narrative; portrait type uses lamb and staff instead.
“Behold the Lamb of God”
“Ecce Agnus Dei” staff
Desert prophet clothing
Points toward Christ
Quick checklist
Camel skin + lamb + pointing finger + cross staff. Eagle + youthful face = Evangelist, not Baptist.
Patron of baptism, Florence (Baptistery), monastic founders, and Jordan river rites.
Saint John the Evangelist — Shared name “John” in English and European languages.
How to tell them apart: Baptist: animal skin, lamb, points to Christ. Evangelist: eagle, Gospel book, youthful apostle at Last Supper.
Practice