John Trapp on Galatians 2:13

Verſe 13. And the other Iews diſſembled] The ſins of teachers are the teachers of ſins: and great mens faults go as ſeldom unaccompanied, as their perſons.

Barnabas alſo] Adhering to Peter rather then to Paul his old companion, not without a tincture perhaps of the old bitter bickering. Try all things; Good men may ſeduce us, as here Peter did Barnabas, and as thoſe would have done Paul, Act. 21.12.