So they do not resort to philosophical arguments to evade its clear statements of truth or to justify the way of life of people who have abandoned its moral standards.
The Bible does not have clear statements of truth. That is why there are 35,000 Christian religions. There is no Bible chapter explaining even one single doctrine, such as the soul, hell, the nature of God of the resurrection. There is a scattering of contradictory scriptures, so each religion chooses which one is figurative and which one is literal.
In pointing out the meaning of symbolic language in the Bible, they let the Bible provide its own explanation, instead of giving their theories as to its significance.(1 Cor. 2:13) Indications as to the meaning of symbolic terms are usually found in other parts of the Bible. (As an example, see Revelation 21:1; then, regarding the meaning of “sea,” read Isaiah 57:20. To identify “the Lamb” referred to in Revelation 14:1, see John 1:29 and 1 Peter 1:19.)
Again, that is rubbish. Just look at how many different interpretations the Watchtower has provided on the symbolic language of Daniel and Revelation.
As for fulfillment of prophecy, they apply what Jesus said about being alert to events that correspond to what was foretold. (Luke 21:29-31; compare 2 Peter 1:16-19.) Conscientiously they point out those events and draw attention to what the Bible indicates they mean.
Again, they prove they have no idea what Jesus meant, which is why they have so many failed predictions. First they said the last days started in 1799, now they think it is 1914. Soon that will change as well.
Jesus said that he would have on earth a “faithful and discreet slave” (his anointed followers viewed as a group), through which agency he would provide spiritual food to those making up the household of faith. (Matt. 24:45-47) Jehovah’s Witnesses recognize that arrangement.
There is nothing to indicate the Slave were "anointed followers as a group." Even the Watchtower leaders are trying to distance themselves from that application, now applying it to just the Governing Body. The most likely application is that the slave class are the elders.
As was true of first-century Christians, they look to the governing body of that “slave” class to resolve difficult questions—not on the basis of human wisdom, but by drawing on their knowledge of God’s Word and his dealings with his servants, and with the help of God’s spirit, for which they earnestly pray.—Acts 15:1-29; 16:4, 5.
The word Governing Body does not appear in the Bible, and neither does the concept. Acts 15:2 shows it was a large group of men: " they arranged for Paul and Barnabas and some others of them to go up to the apostles and older men in Jerusalem regarding this dispute."
God's Spirit obviously has nothing to do with leading the Watchtower Governing Body in difficult questions, since they doctrine keeps changing.