Galatians 1:23

But they had heard only,.... What they knew of the apostle was only by hearsay; they had never seen him, nor heard him preach, nor conversed with him, only had it reported to them;that he which persecuted us in times past; some few years ago, and not them personally, but such as were of the same faith with them, the church at Jerusalem and the members of it; which he made havoc of, committing men and women to prison, and causing others to flee to strange cities;now preacheth the faith which once he destroyed; all as in him lay he endeavoured to destroy it, though he could not entirely root it up; he destroyed many of the disciples that held it, and did all he could to discourage others from embracing and professing it; he made use of the strongest arguments he was master of to confute it, and of the secular arm to crush and extirpate it, but now was become a preacher of it: by "faith" is meant not so much the grace of faith, though to show the nature, necessity, and usefulness of faith in Christ, and to direct and encourage sensible sinners, as he did the jailer, to believe in him, was a principal part of his ministry; but rather the doctrine of faith, which is always designed, when it is said, as here, to be preached or to be obeyed, stood fast in and contended for, or to be departed and erred from, to be made shipwreck of and denied.