Where is Paul's Romans 7 question answered?

Les explains that Paul's question in Romans 7 is not answered immediately; it is answered in the next chapter, Romans 8. He points out that the first seven chapters contain only one reference to the Holy Spirit, but chapter eight mentions the Holy Spirit many times—about nineteen. Until then, Paul keeps asking how he can do the good the new nature desires when the old nature keeps tipping the balances. Les then moves into verse 19, where Paul repeats that he does not do the good he would, but does the evil he would not.