12 We have not received the spirit of the world*‘The spirit of the world’ evidently must exist. If the reference is not to Satan directly, he is certainly behind it. but the Spirit who is from God, so that we might know the things that have been freely given to us by God;*Evidently one of the things the Holy Spirit wants to do is to illumine us on the subject of God’s free gifts—if we would only listen! 13 which things we also expound, not in words taught by human wisdom, but in those taught by the Holy Spirit,*Note that Paul is plainly stating that he receives instruction from the Holy Spirit. If he could do it, we can too. Perhaps 4% of the Greek manuscripts omit "Holy", to be followed by NIV, NASB, LB, TEV, etc. interpreting spiritual things to spiritual people.

14 Now a soulish*That is what the Text says. A ‘soulish’ person cannot understand spiritual things, which sounds rather like a congenital defect, no spirit—the reference might be to humanoids à la Genesis 6 (Matthew 24:37). (I would say that the correct translation of Jude 19 is: "they are ‘soulish’, not having a spirit". See the footnote at that point.) man does not receive the things of the Spirit of God, for they are foolishness to him; indeed, he cannot understand them, because they are spiritually discerned.