Christ and Him crucified can be grasped in faith even by babes that is true. But there is milk for the babes but also meat for the mature. There is a wisdom taught to the "mature"(NIV), "mature believers (NLT)", or "the perfect"(KJV).
1 Corinthians 2
Proclaiming Christ Crucified
1And I, when I came to you, brothers,
[a](A) did not come proclaiming to you(B) the testimony[b] of God with lofty speech or wisdom. 2For I decided to know nothing among you except
(C) Jesus Christ and him crucified.
3And
(D) I was with you
(E) in weakness and in fear and much trembling,
4and my speech and my message were not in plausible words of wisdom, but in demonstration of
(F) the Spirit and of power,
5that your faith might not rest in the wisdom of men but
(G) in the power of God.
Wisdom from the Spirit
6Yet among(H) the mature we do impart wisdom, although it is not
(I) a wisdom of this age or of the rulers of this age,
(J) who are doomed to pass away.
7But we impart a secret and hidden wisdom of God,(K) which God decreed before the ages for our glory.
8None of(L) the rulers of this age understood this, for
(M) if they had, they would not have crucified
(N) the Lord of glory.
9But, as it is written,
(O) "What no eye has seen, nor ear heard,
nor the heart of man imagined,
what God has
(P) prepared
(Q) for those who love him"—
10these things(R) God has revealed to us through the Spirit.
For the Spirit searches everything, even(S) the depths of God.
11For who knows a person’s thoughts
(T) except the spirit of that person, which is in him? So also no one comprehends the thoughts of God except the Spirit of God.
12Now
(U) we have received not
(V) the spirit of the world, but the Spirit who is from God, that we might understand the things freely given us by God.
13And we impart this
(W) in words not taught by human wisdom but taught by the Spirit,
(X) interpreting spiritual truths to those who are spiritual.[c