What is Philippians a higher level of?
Philippians represents a higher level of reproof, as stated in the context. This is part of the prison epistles written after Acts 28, along with Ephesians (higher doctrine) and Colossians (higher correction). The epistles written after Acts 28 include Ephesians, Philippians, and Colossians. Each addresses a distinct higher level: Ephesians for doctrine, Philippians for reproof, and Colossians for correction.
Les explains that after making a big jump up, we reach a plateau above Romans, Corinthians, and Galatians. He identifies Ephesians, Philippians, and Colossians as prison epistles written after Acts 28. Within this higher level, Ephesians is a higher level of doctrine, Philippians is a higher level of reproof, and Colossians is a higher level of correction. Les notes that once this jump into deeper spiritual truths occurs, there is no longer any mention of a Jew or the Old Testament in these letters, turning to the Gentile.