John Gill Commentary Acts 16:4

"And as they went on their way through the cities, they delivered them the decrees to keep which had been ordained of the apostles and elders that were at Jerusalem." — Acts 16:4 (ASV)

And as they went through the cities Of Derbe, Lystra, and Iconium, and others in Lycaonia, and in Phrygia and Galatia; the Arabic version reads, "they both"; that is, Paul and Barnabas:

they delivered them the decrees for to keep ; they gave the churches, in these cities, the sentiments, and determinations to be observed and followed by them:

that were ordained of the apostles which were at Jerusalem ; concerning the abstinence of the Gentiles from things offered to idols, and from blood, and from things strangled, and from fornication, (Acts 15:20Acts 15:29) .