For discussions of the meaning of this motif, see Renate Rosenthal and Renee Sivan, Ancient Lamps in the Schloessinger Collection, Qedem 8 (Jerusalem: Hebrew University, 1978), p. 166; Nitowski, “Inscribed Lamps,” pp. 23–24; and Charles A. Kennedy, “The Development of the Lamp in Palestine,” Berytus 14 (1963), pp. 83–85. Loffreda (Lucerne Bizantine, pp. 215–218) has suggested identifying it as a tree of life.