Upon the last chapter of Romans and its relation to the remainder of the epistle, see especially Farrar's Life and Work of St. Paul, p.450 sq., Weiss' Einleitung in das N. T. p.245 sq., Pfleiderer's Urchristenthum, p.145 , Renan's Saint Paul, p.461 sq. (maintaining that an editor has combined four copies of the one encyclical letter of Paul, addressed severally to as many different churches), Lightfoot's Commentary on Philippians, p.172 sq., and Schaff, Ch. History, I. p.765.