NASB] - 1 Corinthians 1:18 For the word of the cross is foolishness to those who are perishing, but to us who are being saved it is the power of God.
And this foolishness started on the cross with he who decided to make fun out of God .The results of unbelieving was perishing his soul. The other criminal just believed that ,our Savior Jesus Christ was without sin but was hanged for the wrong reason.
This criminal started preaching about Christ that even though He was crucified for the wrong reasons ,it is also for the benefit of those that would believes for redemption of sin for total salvation of humanity.
It is not too late for you to make decisions to be part of this salvation. But the choice is yours.