and Paul, as his custom was, went in unto them, and for three sabbath days reasoned with them from the Scriptures,

And according to Paul's custom he went in among them, and on three sabbaths reasoned with them from the scriptures,

And Paul, as his manner was, went in to them, and on three sabbaths reasoned with them out of the scriptures,

and according to the custom of Paul, he went in unto them, and for three sabbaths he was reasoning with them from the Writings,

Paul - following his usual custom - betook himself to it, and for three successive Sabbaths reasoned with them from the Scriptures,

And Paul, as he generally did, went in to them, and on three Sabbath days had discussions with them from the holy Writings,

Then Paul, according to custom, entered to them. And for three Sabbaths he disputed with them about the Scriptures,

and, following his usual custom, Paul joined them, and for three Sabbaths addressed them, drawing his arguments from the scriptures.

He disputed. Luke setteth down first what was the sum of the disputation; to wit, that Jesus, the son of Mary, is Christ, who was promised in times past in the law and the prophets, who, by the sacrifice of his death, did make satisfaction for the sins of the world, and brought righteousness and life by his resurrection; secondly, how he proved that which he taught. Let us handle this second member first. Luke saith that he disputed out of the Scriptures; therefore the proofs of faith must be fet from [sought at] the mouth of God alone. If we dispute about matters which concern men, then let human reasons take place; but in the doctrine of faith, the authority of God alone must reign, and upon it must we depend. All men confess that this is true, that we must stay ourselves upon God alone; yet there be but a few which hear him speak in the Scriptures. But and if that maxim take place among us, [1] that the Scripture cometh of God, the rule either of teaching or of learning ought to be taken nowhere else. Whereby it doth also appear with what devilish fury the Papists are driven, when they deny that there can any certainty be gathered out of the Scriptures; and, therefore, they hold that we must stand to the decrees of men. For I demand of them whether Paul did observe a right order in disputing or no? at least, let them blush for shame, that the Word of the Lord was more reverenced in an unbelieving nation than it is at this day among them. The Jews admit Paul, and suffer him when he disputeth out of the Scriptures; the Pope and all his count it a mere mock when the Scripture is cited; as if God did speak doubtfully there, and did with vain boughts [2] mock men. Hereunto is added, that there is at this day much more light in the Scriptures, and the truth of God shineth there more clearly than in the law and the prophets. For in the gospel, Christ, who is the Son of righteousness, doth shed out his beam with perfect brightness upon us; for which cause the blasphemy of the Papists is the more intolerable, whilst that they will make the Word of God as yet uncertain. But let us know, as faith can be grounded nowhere else than in the Word of the Lord, so we must only stand to the testimony thereof in all controversies.

Footnotes

1 - "Valet inter nos," is held good among us.

2 - "Ambagibus," ambiguities.

His manner was - His custom was to attend on the worship of the synagogue, and to preach the gospel to his countrymen first, Acts 9:20; Acts 13:5, Acts 13:14.
Reasoned with them - Discoursed to them, or attempted to prove that Jesus was the Messiah. The word used here (διελέγετο dielegeto) often means no more than "to make a public address or discourse." See the notes on Acts 24:25.
Out of the scriptures - By many critics this is connected with the following verse, "Opening and alleging from the scriptures that Christ must needs have suffered, etc." The sense is not varied materially by the change.

As his manner was - He constantly offered salvation first to the Jews; and for this purpose attended their Sabbath-days' meetings at their synagogues.

And Paul, as his manner was, went in unto them,.... To the Jews in their synagogue; for though the Jews had put away the Gospel from them, and the apostle had turned to the Gentiles; yet he still retained a great affection for his countrymen the Jews, and as often as he had opportunity, attended their synagogues, in order to preach the Gospel to them;
and three sabbath days reasoned with them out of the Scriptures: that is, out of the Old Testament, concerning the Messiah, the characters of him, the work that he was to do, and how he was to suffer and die for the sins of men; and this he did three weeks running, going to their synagogue every sabbath day, when and where the Jews met for worship; and made use of books, which they allowed of, and of arguments they could not disprove.

Paul, as his manner was--always to begin with the Jews.
went in unto them--In writing to the converts but a few months after this, he reminds them of the courage and superiority to indignity, for the Gospel's sake, which this required after the shameful treatment he had so lately experienced at Philippi (1-Thessalonians 2:2).

And Paul, according to his custom - Of doing all things, as far as might be, in a regular manner, went in to them three Sabbath days - Not excluding the days between.