John Trapp on 1 Peter 5:13

Verſe 13. The Church that is at Babylon] At Rome ſay the Papiſts, that they may prove Peter to have been Biſhop of Rome. But though this be far ſet, yet here they grant us, that Rome is that myſticall Babylon mentioned in the Revelation. It is probable that S. Peter meant no other Babylon then the Metropolis of Chaldaea, where he, being the Apoſtle of the circumciſion, preached to thoſe diſperſed Jews, and other Gentiles that he had converted.