{Than these necessary things} (pl(886e) tout(936e) t(936e)
epanagkes). This old adverb (from epi and anagk(885c)) 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} (eu praxete). 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} (Err(9373)the). _Valete_.
Perfect passive imperative of 
h(936e)numi, 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 .