How had Rollin changed ?

I don't see Rollin in chapter 11. Rollin was an alcoholic and a club member at the saloon early in his life before he took the pledge. After he took the pledge — What would Jesus Do — he completely changed his ways and began preaching the Gospel to many, and ends up marrying Rachel Winslow after he proposed twice. Rollin is the brother of Virginia Page, and very rich.