Mans wisdom refers to human understanding and earthly perspectives. While Gods wisdom is higher divinely given understanding that aligns with God's will. Its characterized by love, humility, and focus on eternal values. Often appearing foolish to the world standards. Because the flesh is driven by pride. The apostle paul condenmed the wisdom of the world, for it is those who live according to earthly wisdom and who despise, and reject Jesus, 1 Corinthians chapter 1:1 to 1:30. Mans wisdom finds its roots in jealousy and selfish ambition. Carnal minded people can't understand humility and divine wisdom. James chapter 3 tells us, pride and selfish ambition is demonic. Verse 15 , the qualifier, unspiritual, is earthly. Means, earthly refers to to mind set that does not consider God's sovereign rule. It's false faith. True faith from heavenly wisdom. Here's the truth.
1 Corinthians chapter 2:12 to 2:14. Wisdom comes from the holy Spirit. Which a Christian is very fortunate to have. Many people have Spirit of error or stupor. 1 Corinthians chapter 12:8. The holy Spirit gives people the word of wisdom and word of knowledge. Carnal minded people without holy Spirit don't accept things that come from the Spirit of God, but consider it foolishness, and can't understand, 1 Corinthians 2:14. Natural senses attribute to carnal minded people. The flesh is in opposition to the Spirit. James chapter 1, carnal minded people are not doers of the word. It's lack of faith. Romans chapter 11:7. What then? Israel bath not obtained that which he seeks for, but the election hath obtained it, and the rest were blinded. 11:8. God has given them Spirit of slumber. God can give understanding of take it way. These are the spiritually dead. Reprobates resist holy Spirit, and have a unclean Spirit, 2 Corinthians chapter 4 and Romans chapter 1. Two different groups. The election are the third group. If you still have difficulty understanding. I recommend shepherds on you tube. There are videos on Spirit of slumber and election.