How can Isaiah, Ezekiel, the Gospels, and Paul have different personalities and perspectives but still be authored by the Holy Spirit?
Scripture's human writers display distinct personalities and perspectives—Isaiah differs from Ezekiel, the Gospels differ from Paul—yet the Holy Spirit authored the composite whole. The Spirit inspired Paul to write while preserving the human element, such as why he wrote 1 Corinthians in response to questions the Corinthians had written to him.
Les explains that Isaiah writes from a totally different personality than Ezekiel, and the Gospels are from a totally different perspective than Paul, yet they are all in a composite way authored by the Holy Spirit. He notes that in chapter 7 verse 1 the Holy Spirit inspires Paul to write, but it also gives the human element as to why he wrote 1 Corinthians: it was in response to the Corinthians' written questions. They had many questions and asked Paul about problem after problem. This letter deals with problems Paul does not commend them for; he is too kind to condemn them outright, but neither does he commend them or brag on them. Les says that when they get through the love chapter, 1 Corinthians 13, he will emphasize that Paul is backing into the situation so he does not flare up their anger and put them where he cannot deal with them, yet he will not agree with all their problems because they are still so carnal. Of all the churches Paul deals with, none were as carnal and fleshly minded as the church at Corinth.