The genuineness of this epistle is not called in question. Its Pauline origin is universally acknowledged. Occasion of. The churches of Galatia were founded by Paul himself (Acts 16:6; Gal. 1:8; 4:13, 19). They seem to have been composed mainly of converts from heathenism (4:8), but partly also of Jewish converts, who probably, under the influence of Judaizing teachers, sought to incorporate the rites of Judaism with Christianity, and by their active zeal had succeeded in inducing the majority of the churches to adopt their views (1:6; 3:1). This epistle was written for the purpose of counteracting this Judaizing tendency, and of recalling the Galatians to the simplicity of the gospel, and at the same time also of vindicating Paul's claim to be a divinely-commissioned apostle.