Saint John the Baptist Preaching in the Wilderness Square with John the Baptist preaching in the desert; Round stained glass with representation of John the Baptist preaching in the desert. He is depicted speaking from an improvised pulpit consisting of sticks; leaning against the strongly twisted trunk of a tree. Among the public are publicans and soldiers; John the Baptist preaching (perhaps Christ among the bystanders); John the Baptist identifies Christ as the Lamb of God ('Ecce Agnus Dei') (John 1:29; 1:36); anonymous; Southern Netherlands; c. 1540; glass; silver stain; d 29.5 cm