Jesus said:

I thank you, Father, Lord of heaven and earth, that you have hidden these things from the wise and understanding and revealed them to little children; yes, Father, for such was your gracious will.

Luke 10:21

Since, in the wisdom of God, the world did not know God through wisdom, it pleased God through the folly of what we preach to save those who believe.

1 Corinthians 1:21