Paul writes in 1 Corinthians Chapter 1

"For 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. For it is written:
"I will destroy the wisdom of the wise; the intelligence of the intelligent I will frustrate."

Where is the wise man? Where is the scholar? Where is the philosopher of this age? Has not God made foolish the wisdom of the world? For since in the wisdom of God the world through its wisdom did not know him, God was pleased through the foolishness of what was preached to save those who believe. Jews demand miraculous signs and Greeks look for wisdom, but we preach Christ crucified: a stumbling block to Jews and foolishness to Gentiles, but to those whom God has called, both Jews and Greeks, Christ the power of God and the wisdom of God. For the foolishness of God is wiser than man's wisdom, and the weakness of God is stronger than man's strength."

So, what is faith? What is the power of the gospel? Where does it come from?