But God be thanked that ye were the servants of sin,.... Not that the apostle must be thought to give thanks to God for that these persons had been the servants of sin, than which nothing is more disagreeable to God, or caused more shame to themselves; but that inasmuch as they had been in the drudgery and service of sin, they were now freed from it.
Just as if a person, that has been a slave for some time in Algiers, should bless God, or be thankful to the instrument of his deliverance, that whereas he had been in such slavery, he is now redeemed from it: wherefore it is added,but ye have obeyed from the heart that form of doctrine which was delivered you.
By "the form of doctrine", is meant the Gospel, which is the "doctrine" of the Scriptures, of Christ and his apostles, and is sound and according to godliness; and is a "form", or contains a summary and compendium of truths, and is a pattern or exemplar, according to which ministers are to preach, and people to hear and receive.
So the word opwj which is the same with tupov here, is used by the Jewish writers for a form, copy, pattern, or exemplar of any sort of writings This form of doctrine is hlbq, "a Cabala", but not like that of the Jews' oral law, or form of traditions , handed down, as they say, from one man, and set of men, to another; but this is delivered from the Father to Christ, from Christ to his apostles, and by them to the saints; and "into which they were delivered", as it may be rendered, as into a mould; and so received the impression of it, and were evangelized by it: so such are who have a spirit of Gospel liberty, in opposition to a spirit of bondage; who live by faith on Christ, and not by the works of the law; who derive their comfort from him, and not from anything done by them; whose repentance and obedience are influenced by the grace of God, and who are zealous of good works, without any dependence on them.
This form of doctrine was "obeyed" by them; by which is meant, not a mere obedience to the ordinances of the Gospel; nor a bare hearing of the doctrines of it, and giving an assent unto them; but an embracing of them by faith for themselves, so as to lay hold on Christ in them, submit to his righteousness therein revealed, and be willing to be saved by him, and him alone, in his own way; and this is the obedience of faith: the reason why faith is expressed by obedience is, because faith receives truth upon the veracity of God, and not upon the dictates of carnal reason; and is always more or less attended with external obedience to the will of God; and that is rightly performed only by faith.
And this obedience did not lie in words, or proceed on mercenary views, and in an hypocritical way; but was "from the heart"; and was real and sincere: and good reason there is why a hearty, cheerful, and voluntary obedience should be yielded to t he Gospel; since it is from God; Christ is the substance of it; it is truth, and the word of our salvation.
The Alexandrian copy reads, "from a pure heart"; and the Arabic version, "from the sincerity of your heart"; and the Ethiopic version, "with your whole heart". T. Bab. Gittin, fol. 26. 1. Bava Bathra, fol.
44. 2. R. Moses Kotzensis Mitzvot Tora, precept. Affirm. 50. Vid. Pirke Abot, c. 1. sect.