The Galatians, soon after St. Paul had preached the Gospel to them, were seduced by some false teachers, who had been Jews and who were for obliging all Christians, even those who had been Gentiles, to observe circumcision and the other ceremonies of the Mosaical law. In this Epistle, he refutes the pernicious doctrine of those teachers and also their calumny against his mission and apostleship. The subject matter of this Epistle is much the same as that to the Romans. It was written at Ephesus, about twenty-three years after our Lord's Ascension.