Giotto's fresco cycles of the lives of St. John the Baptist and St. John the Evangelist in the Peruzzi Chapel in Santa Croce, Florence, have not enjoyed as much scholarly attention as the vast fresco cycle in the Arena Chapel. Scholars have analyzed the space depicted in the frescoes, the striking monumentality of the figures, and the depiction of architecture oblique to the picture plane; thematic content, however, has received less attention than form and space. In this essay, I will propose some religious and secular iconographic and thematic unities: themes of rebirth, resurrection, and communitas, which correlate with fourteenth-century Florentine attitudes toward wealth, historiography, and a belief in the spiritual role of the earthly city. The themes of the frescoes articulate the social and political structures of early fourteenth-century civic life, as Giotto transformed traditional subjects into images of contemporary significance in these frescoes.