Divine wisdom is what this passage in 1 Chor 2:6-16 is about.
verses 6-8
Wisdom is completely foriegn to this world, this age, and its rulers, that is, those who are responsible of the evil in the world: there is a reference here both to those who directly caused our Lord’s (the Sandhedrin, Herod, Pilate: cf. v. 8), and to the devil and the fallen angels, as can be seen from similar New Testament references (cr. Lk 4:6; Jn 12:31; Eph 2:2). The Apostle is actually saying that the Gospel is not contrary to reason; for the wisdom the Gospel has is divine wisdom. The wisdom St. Paul spreads to those Christians who are well grounded in the faith. The mature Christians are called to gain full knowledge of Christ the Son of God.
The “Secret and hidden”: refers to God’s plan of salvation. God’s plan is not meant to be fully understood while we are in our mortal stage but will fully grasp it when we get into heaven. This secret and hidden wisdom can know by means of Revelation (cf. Lk 8:10; Col 1:26), which we are given in Christ (cf. Rom 16:35-36; Eph 1:8-10; 3:3-7; Col 1:26-27).
Verse 9 are in reference to the gifts that God has ready for us for all eternity for those who trully love him. St. Clement of Rome, the successor to Peter says in the First Letter to the Corinthians says “How blessed, how marvellous, are the gifts of God. Some of them, indeed, already lie within our comprehension-- the life that knows no death, the shining splendour of righteousness, truth in freedom, trusting, the holiness of chastity. But what of the things that God has prepared for those who hope in him? Only the Creator and Father of eternity knows them. Let us strive earnestly to be counted amoung those who wait patiently in order to earn a share in his promised gifts.” St. Pius V catechism says this “with this truth, the minds of the faithful should be deeply impressed–that the happiness of the saints is full to overflowing of all those pleasures which can be enjoyed or even desired in this life, whether they have to do with the powers of the mind or of the perfection of the body; although this must be in a manner more exalted than, to use te Apostle’s words, eye has seen, ear heard, or the heart of man concieved” (I, 13, 12).