Being fallible carbon life forms, we all can misinterpret it.
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One passage that sometimes stirs controversy regarding illumination is
John 14:26, “But the Counselor, the Holy Spirit, whom the Father will send in my name, will teach you all things and will remind you of everything I have said to you.” Jesus was speaking to His disciples in the upper room, giving them last instructions before His death. This special group of men was to be responsible for spreading the good news of Jesus Christ to the whole world. They had spent three and a half years with Him, watching His miracles and hearing His teachings. They would relay those things to the rest of the world, and would need God’s special help remembering those things accurately. Jesus said that the Holy Spirit would teach them and remind them of what had been said, so they could give it to others (including the writing of the Gospels). This verse does not teach that the Spirit will do so with all believers (though there are other verses that speak of the Spirit’s illuminating work).
What is the Holy Spirit’s illuminating work in believers?
Ephesians 1:17-18 tells us that the Spirit gives wisdom and revelation concerning Jesus Christ, and opens the eyes of understanding so we can know God’s purposes in our lives. In
1 Corinthians 2:10-13, God has revealed His plans for us by His Spirit, who teaches us spiritual things. The context here points to the Word of God as that which has been revealed. The Spirit of God will always point us to the Word of God for our instruction. As Jesus told His disciples in
John 16:12-15, the Spirit simply repeats what the Father and the Son have already said. This repetition helps us remember and fully hear what God has already told us. Sometimes we have to hear things several times before we actually hear them. That’s where the Spirit comes in. "
https://www.gotquestions.org/biblical-illumination.html