Note 2 at 1Co 2:7: God's wisdom is not hidden from His children but for His children.

In a sense, God has communicated His wisdom in code so that no one can perceive it except those to whom the Holy Spirit reveals it. The Holy Spirit offers God's wisdom to all people, starting with the revelation of their need for Christ as their Savior. If they receive that truth by putting their faith in Jesus, then they receive the mind of Christ in their hearts (1Co 2:16). They also receive as much revelation of the things of God as they will believe and receive. If they reject the revelation that the Holy Spirit seeks to give, then God's wisdom remains a mystery. They are denied access.

This safeguards the awesome power of God. Paul said that Christ was the wisdom and the power of God (1Co 1:24). If people could tap into God's wisdom in some carnal way, they could use the power of God for their own selfish purposes. That will never happen, because God's wisdom is hidden in Christ, with the Holy Spirit being the only one who can grant entrance (see note 3 at 1Co 2:14).

Note 3 at 1Co 2:7: Thirteen different Greek words were translated "ordained" in the New Testament. The Greek word that Paul used here is only used one other time in scripture (Lu 21:14). This Greek word, "PROMELETAO," literally means to "meditate before" (Strong's Exhaustive Concordance, 1988 edition), and it was translated that way in Luke 21:14 - "Settle it therefore in your hearts, not to meditate before what ye shall answer."

Therefore, Paul was referring to the wisdom of God's plan of salvation as being already thought out before the world was ever created. This is hard for finite man to understand. We just have to take scriptures like this and believe them, and marvel at the infinite wisdom of God.