4:12-18 The apostle desires that they would be of one mind with him respecting the law of Moses, as well as united with him in love. In reproving others, we should take care to convince them that our reproofs are from sincere regard to the honour of God and religion and their welfare. The apostle reminds the Galatians of the difficulty under which he laboured when he first came among them. But he notices, that he was a welcome messenger to them. Yet how very uncertain are the favour and respect of men! Let us labour to be accepted of God. You once thought yourselves happy in receiving the gospel; have you now reason to think otherwise? Christians must not forbear speaking the truth, for fear of offending others. The false teachers who drew the Galatians from the truth of the gospel were designing men. They pretended affection, but they were not sincere and upright. An excellent rule is given. It is good to be zealous always in a good thing; not for a time only, or now and then, but always. Happy would it be for the church of Christ, if this zeal was better maintained.
14. my temptation—The oldest manuscripts read, "your temptation." My infirmity, which was, or might have been, a "temptation," or trial, to you, ye despised not, that is, ye were not tempted by it to despise me and my message. Perhaps, however, it is better to punctuate and explain as Lachmann, connecting it with Ga 4:13, "And (ye know) your temptation (that is, the temptation to which ye were exposed through the infirmity) which was in my flesh. Ye despised not (through natural pride), nor rejected (through spiritual pride), but received me," &c. "Temptation does not mean here, as we now use the word, tendency to an evil habit, but BODILY TRIAL."
as an angel of God—as a heaven-inspired and sent messenger from God: angel means "messenger" (Mal 2:7). Compare the phrase, 2Sa 19:27, a Hebrew and Oriental one for a person to be received with the highest respect (Zec 12:8). An angel is free from the flesh, infirmity, and temptation.
as Christ—being Christ's representative (Mt 10:40). Christ is Lord of angels.