why are they more intelligent than us

#9
Is this what you are referring to?

18For the message of the cross is foolishness to those who are perishing, but to us who are being saved it is the power of God. 19For it is written:
"I will destroy the wisdom of the wise;
the intelligence of the intelligent I will frustrate."[c]
 
#13
That is referring to this

Isaiah 29:14 (New International Version)


14 Therefore once more I will astound these people
with wonder upon wonder;
the wisdom of the wise will perish,
the intelligence of the intelligent will vanish."


I don't believe it is necessarily saying they were more intelligent.