What is the functional group in thiols?

Which of the following compounds is identical to the one shown below? 

What stands out about Paul’s letter to the Philippians?

Paul had visited Rome during his second missionary journey and was addressing some of the problems he had observed in his letter to the Romans.

When Paul writes the chapter on “love” in 1 Corinthians 13 what context is he addressing?

Scholars think that Philemon accepted back his run-away slave and treated him as a brother in Christ because the letter of Philemon was not destroyed but saved and passed around the churches. 

Justification in Romans refers to…

Paul’s ministry was supported financially by the churches he started.

Paul emphasized grace more in his letters than the other apostles due to his history of being a….

What would have been most shocking to the Roman and Jewish Christians when Paul described the way a Christian family should function?