Galatians 1:2

οἱ σὺν ἐμοὶ. No name is mentioned: neither Timothy nor Silas, nor any other companion of Paul known to the Galatians can have been with him when he wrote, nor is the name mentioned of any Christian congregation; probably he was residing in some Greek city in which no Church had yet been formed. The phrase οἱ σὺν ἐμοὶ seems, from its use in Philippians 4:21, to describe a small group of brethren immediately surrounding the Apostle; for the salutation from them is there followed by a separate salutation from the Roman Church in general. The position of the Apostle during his first few weeks at Corinth, before Silas and Timothy rejoined him, corresponds closely to the circumstances indicated by this phrase (see Introd., pp. 146 147). ἐκκλησίαις. There were four Churches in Southern Galatia, but they formed a single group, being all bound together by the great imperial highway that ran through them, and gave facility for constant intercourse. All would, therefore, respond speedily to any religious impulse, like the wave of Pharisaic reaction which the Apostle is combating in this Epistle.