Expositor's Bible Commentary Commentary Galatians 1:2

"and all the brethren that are with me, unto the churches of Galatia:" — Galatians 1:2 (ASV)

From Paul’s normal habit of including the names of his fellow missionaries at the beginning of his letters, it would appear that “the brothers” mentioned here are his fellow missionaries, though their actual identity cannot be known for sure. The interesting point is that Paul does not name these fellow missionaries, as he does elsewhere, not wanting to give the impression that his Gospel requires additional support. It was, after all, received directly from God. At the same time, he wishes to remind the Galatians that the Gospel that had been preached to them, far from being a Pauline oddity, is actually the received doctrine of all the Christian church and its missionaries.