LThe cla**ic work on this subject remains Hermann Gunkel, Die Wirkungen des heiligen Geistes nach der popularen Anschauung der apostolischen Zeit und der Lehre des Apostels Paulus (3d ed.; Gottingen: Vandenhoeck & Ruprecht, 1909). For the entire discussion and Bibliography, see Hermann Kleinknecht, "lCV£1)a, XV£DFaX1KOs," TDNT 6 (1968) 339-52 2Luke used a report of a ma** ecstasy, which he interpreted as the miracle of speaking in Different languages; see Eduard Lohse, "X£VX£KOOXj," TDNT 6 (1968) 5>52. For the dis- Cussion of other interpretations, see Hans Conzelmann, Acts of the Apostles: A Commentary On the Acts of the Apostles (Hermeneia; Philadelphia: Fortress, 1987) 15-17