Interlinear view shows the original Hebrew/Greek text with word-by-word translation (KJV).
1
Τί which? οὖν therefore/then τὸ the/this/who περισσὸν excessive/ab… τοῦ the/this/who Ἰουδαίου, Jewish ἢ or/than τίς which? ἡ the/this/who ὠφέλεια advantage τῆς the/this/who περιτομῆς; circumcision
2
πολὺ much κατὰ according to πάντα all τρόπον· way πρῶτον first μὲν on one hand γὰρ for ὅτι that/since ἐπιστεύθησαν trust τὰ the/this/who λόγια oracles τοῦ the/this/who θεοῦ. God
3
τί which? γὰρ for εἰ if ἠπίστησάν disbelieve τινες; one μὴ not ἡ the/this/who ἀπιστία unbelief αὐτῶν he/she/it/self τὴν the/this/who πίστιν faith τοῦ the/this/who θεοῦ God