4:13 Ye know how through {m} infirmity of the flesh I preached the gospel unto you at the first.
(m) Many afflictions.
4:13 Ye know how through infirmity of the flesh I preached the gospel. The Revised Version is clearer: Ye know that because of an infirmity of the flesh.... Some fact, not explained to us, but well known to the Galatians, is referred to. It is implied that some physical weakness caused him to preach in Galatia the first time. Perhaps he was passing through and was stopped by an infirmity that prevented him from traveling.
At the first. This implies he had preached there more than once. The Acts speak of two visits to Galatia (Ac 16:6 18:23).
4:13 I preached to you, notwithstanding infirmity of the flesh - That is, notwithstanding bodily weakness, and under great disadvantage from the despicableness of my outward appearance.
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.