CLAIM: When Philip meets the Ethiopian eunuch reading Isaiah 53, Philip asks, “Do you understand what you are reading?” And the man responds by saying, “Well, how could I, unless someone guides me?” Jehovah’s Witness argue that this supports our need for an interpretive authority like the Watchtower Society: ““in order to understand God’s Word and discern his will we…need the help of his dedicated, organized people. [i.e. the Watchtower Society] The Ethiopian Bible reader acknowledged that fact.” Is this the case?
RESPONSE: Not at all. Several responses are in order:
First, this is an example—not a precept or principle. We cannot build doctrines on examples. We need precepts to support core doctrines (see “Hermeneutics”).
Second, Philip is one man—not an organizational society of interpreters. Thus this undermines the Jehovah’s Witness position, because under this view, one man (Philip) cannot interpret the Bible.
Third, Philip explained from the Scriptures—not from some alien hermeneutical grid. Luke records, “Beginning from this Scripture he preached Jesus to him” (Acts 8:35). Philip appealed to the Scripture itself—not to another source. This too undermines the position explained above.
Fourth, the Ethiopian eunuch never joined a formal organization. In fact, God supernaturally ripped Philip from the eunuch after his baptism. In the Watchtower society, we need to join their organization to be saved, while this text undermines this fact. After all, the Ethiopian man went away “rejoicing” (Acts 8:39).
 Your Will Be Done on Earth (Brooklyn: Watchtower Bible and Tract Society, 1958), p. 362. Cited in Ron Rhodes, Reasoning from the Scriptures with Jehovah’s Witnesses (Eugene, OR: Harvest Publishers, 2009), 34.