A.T. Robertson Commentary Acts 15:29

"that ye abstain from things sacrificed to idols, and from blood, and from things strangled, and from fornication; from which if ye keep yourselves, it shall be well with you. Fare ye well." — Acts 15:29 (ASV)

Than these necessary things (πλην τουτων των επαναγκες). This old adverb (from επ and αναγκη) means on compulsion, of necessity. Here only in the N.T. For discussion of these items see on verses 20,21. In comparison with the freedom won this "burden" is light and not to be regarded as a compromise in spite of the arguments of Lightfoot and Ramsay. It was such a concession as any converted Gentile would be glad to make even if "things strangled" be included. This "necessity" was not a matter of salvation but only for fellowship between Jews and Gentiles. The Judaizers made the law of Moses essential to salvation (15:16).

It shall be well with you (ευ πραξετε). Ye shall fare well. A classical idiom used here effectively. The peace and concord in the fellowship of Jews and Gentiles will justify any slight concession on the part of the Gentiles. This letter is not laid down as a law, but it is the judgment of the Jerusalem Christians for the guidance of the Gentiles (16:4) and it had a fine effect at once (15:30-35). Trouble did come later from the Judaizers who were really hostile to the agreement in Jerusalem, but that opposition in no way discredits the worth of the work of this Conference. No sane agreement will silence perpetual and professional disturbers like these Judaizers who will seek to unsettle Paul's work in Antioch, in Corinth, in Galatia, in Jerusalem, in Rome.

Fare ye well (Ερρωσθε). Valete. Perfect passive imperative of ρωννυμ, to make strong. Common at the close of letters. Be made strong, keep well, fare well. Here alone in the N.T. though some MSS. have it in 23:30.