No other gospel

Says Paul is amazed that they are so quickly turning from the one who called them in the grace of Christ εἰς ἕτερον εὐαγγέλιον (eis heteron euangelion, “to a different gospel”), ὃ οὐκ ἔστιν ἄλλο (ho ouk estin allo, “which is not another”). The BSB has “which is not even a gospel” and does not render ἄλλο as “another.” Some are troubling them and wanting to distort the gospel of Christ. In 1:10 he asks whether he is now persuading men or God, and whether he seeks to please men; if he were still pleasing men he would not be Christ’s servant. The BSB puts the first question as a matter of courting men’s favor; the Greek verb is πείθω (peithō, “persuade”).

Implies The relative clause denies that the different message is a second gospel. The test is the content already preached, not the standing of the messenger, as 1:8–9 makes plain.

Says The wording of 1:6–7 and of 1:10 is treated in the language notes and is not taken up again here. On εὐαγγέλιον, see εὐαγγέλιον θεοῦ: "the gospel of God" and εὐαγγέλιον.