Galatians 1:21 Afterwards I came into the regions of Syria and Cilicia;
22 And was unknown by face unto the churches of Judaea which were in Christ:
23 But they had heard only, That he which persecuted us in times past now preacheth the faith which once he destroyed.
24 And they glorified God in me.
As Paul ends this chapter we see he has traveled to other outlying areas where no one knew him in his physical appearance but only from what they had heard about him. They remembered him as the one that persecuted Christians but that he had a life changing experience and was now preaching what he once condemned. I am sure some doubted his salvation but that did not stop him from going places that needed to here the Gospel. When the people realized Paul was a changed person they began praising God, not Paul, because they knew if God could change a man like him that He was a powerful God. To think that God would save someone who had been so terribly opposed to Him, was almost unbelievable. In this we can see that there is hope for anyone even if we think someone is beyond the point of redemption, even if it takes a life changing experience.