This chapter talks all about Abraham.
The chapter opens up by talking about how Abraham was really the founder of the Jewish religion. Then it says that he was counted as righteous because of his faith in God, not because he was circumcised. It also said that this is how we are counted, by our faith in God. Then the chapter talks about the great relationship Abraham had with God. Because of his obedience to God, God promised him that he would be "the father of many nations." Verse 16 says: So the promise is received by faith. It is given as a free gift. And we are all certain to receive it, whether or not we live according to the law of Moses, if we have faith like Abraham's. For Abraham is the father of all who believe. (Romans 4:16 NLT). This verse is talking about how everyone gets the chance to be with God, they just have to choose him and trust him. Then it talks about how much Abraham's faith grew and how much our faith will grow.