We know “Christ and him crucified“ was a message for the immature.
Paul wrote:
“1And I, brethren, when I came to you, did not come with excellence of speech or of wisdom declaring to you the testimony of God.
2For I determined not to know anything among you except Jesus Christ and Him crucified.”
He explained :
“1And I, brethren, could not speak to you as to spiritual
people but as to carnal, as to babes in Christ.
2I fed you with milk and not with solid food; for until now you were not able
to receive it, and even now you are still not able;
3for you are still carnal.”
But he said this of the mature:
“6However, we speak wisdom among those who are mature, yet not the wisdom of this age, nor of the rulers of this age, who are coming to nothing.
7But we speak the wisdom of God in a mystery, the hidden
wisdom which God ordained before the ages for our glory…”