After the establishment of the Twelve, Luke proceeds to describe the descent of the Spirit as a further sign of the dawn of the eschatological era (2:1–13). The dating of this event to “the day of Pentecost” (2:1) may be important for two reasons. First, “Pentecost” is by definition the fiftieth day after Passover (cf. Lev. 23:15–16). To locate this event at Pentecost is to provide a temporal marker for the events that followed Jesus’s death and resurrection. Luke has noted earlier that Jesus appeared to his disciples for “forty days” (1:3) before he ascended into heaven. This places the descent of the Spirit within days of his ascension. Second, by the first century, Pentecost becomes a feast that celebrates the giving of the law on Mount Sinai during the time of the exodus (Jubilees 6:1…