…καὶ οἱ σὺν ἐμοὶ πάντες ἀδελφοὶ ταῖς ἐκκλησίαις τῆς Γαλατίας,
…and those with me – all the brothers, to the churches of Galatia:
Paul outlined his authority for claiming apostleship in v.1. Now as part of his greeting to the churches, he implies that his is not a mere ‘mystical’ authority (that no-one can question) because he has the support of all (πάντες) the brothers who are with him. Paul could not write this if the brothers were not ‘with him’, not just in a geographic sense, but who are of one mind with him. Even these unidentified brothers (ἀδελφοὶ) support Paul’s apostleship and thus his message! Some ‘ministers of the gospel’ either claim divine authority without the support of brothers, or they have the support of brothers without the true divine calling. Paul has both. This means there is strict agreement and support for Paul and what he is about to say in this hard hitting letter.
This helps us to see that both an inward and an external call is required for a man to enter into professional Word ministry. We should be weary of men who say that they have the inward call which has not been substantiated by those around him (i.e church elders etc.). Likewise, though more difficult to ascertain, we should be weary of men who have the support of brothers but do not have the true inward calling.