John Trapp on Galatians 4:18

Verſe 18. To be zealouſly affected in a good thing] In a good cauſe, for a good end, and in a good manner. There is a counterfeit zeal, as it that of the Popiſh Martyrs or traitours rather, of whom Campian in his Epiſtle to the honourable Counſellours of Queen Elizabeth, Quamdiu vel unus quispiam è nobis ſupererit qui Tiburno veſtro fruatur, &c. As long as there ſhall be left any one of us to wear a Tibu[illegible: 1 letter]n tippet, we will not ceaſe our ſuit.

And not only when I am preſent] Sith even abſent I teach and tell you the truth of God by letters.