The Apostle Paul
Philippians 1:28ESV·traditional attribution

and not frightened in anything by your opponents. This is a clear sign to them of their destruction, but of your salvation, and that from God.

John Calvin Reformed @genevareformer

28 And in nothing terrified. The second thing which he recommends to the Philippians is fortitude of mind, “La force et constance de courage;” —”Strength and constancy of courage.” that they may not be thrown into confusion by the rage of their adversaries.

Matthew Henry Presbyterian @wholebiblehenry

The apostle concludes the chapter with two exhortations: - I. He exhorts them to strictness of conversation (Phi 1:27): Only let your conversation be as becometh the gospel of Christ. Observe, Those who profess the gospel of Christ should have their conversation as becomes the gospel, or in a suitableness and agreeableness to it.

Commenting on Philippians 1:27-30

John Gill Reformed Baptist @doctorgill

And in nothing terrified by your adversaries,.... Not by Satan, though a roaring lion, for Christ is greater than he; nor by the world which Christ has overcome; nor by false teachers, though men of art and cunning; nor by violent persecutors, who can do no more than kill, the body; let not the power, the rage, the cunning, or the violence of one or...