Commentaries:
Robertson's Word Pictures (NT)
Which is one outwardly (o en tw fanerw). Ioudaiov (Jew) has to be repeated (ellipse) with the article, "the in the open Jew" (circumcision, phylacteries, tithes, etc.). Likewise repeat peritomh (circumcision).
Other Robertson's Word Pictures (NT) entries containing Romans 2:28:
1 Corinthians 7:19
1 Corinthians 10:18
Philippians 1:10
Philippians 3:3
Revelation 2:9
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