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. (NIV)

For the story and message of the cross is sheer absurdity and folly to those who are perishing and on their way to perdition, but to us who are being saved it is the [manifestation of] the power of God. (AMP)

For the preaching of the cross is to them that perish foolishness; but unto us which are saved it is the power of God. (KJV)