What is the meaning of Acts 15:21-29?

21 For Moses of old time hath in every city them that preach him, being read in the synagogues every sabbath day. 22 Then pleased it the apostles and elders, with the whole church, to send chosen men of their own company to Antioch with Paul and Barnabas; namely, Judas surnamed Barsabas, and Silas, chief men among the brethren: 23 And they wrote letters by them after this manner; The apostles and elders and brethren send greeting unto the brethren which are of the Gentiles in Antioch and Syria and Cilicia: 24 Forasmuch as we have heard, that certain which went out from us have troubled you with words, subverting your souls, saying, Ye must be circumcised, and keep the law: to whom we gave no such commandment: 25 It seemed good unto us, being assembled with one accord, to send chosen men unto you with our beloved Barnabas and Paul, 26 Men that have hazarded their lives for the name of our Lord Jesus Christ. 27 We have sent therefore Judas and Silas, who shall also tell you the same things by mouth. 28 For it seemed good to the Holy Ghost, and to us, to lay upon you no greater burden than these necessary things; 29 That ye abstain from meats offered to idols, and from blood, and from things strangled, and from fornication: from which if ye keep yourselves, ye shall do well. Fare ye well. (Acts 15:21-29 KJV)

William Burkitt’s Commentary

Observe here, 1. That though the apostles were the infallible deciders, yet the elders, and the whole church, were unanimous consenters; for no contradiction to the determination of this controversy did rise from any hand, but there was a happy acquiescence in this apostolical decision: It pleased the elders, and the whole church.

Observe, 2. The decrees of this synod, and the determination of this council at Jerusalem, are committed to writing, and despatched by unprejudiced messengers of their own to the church of the Gentiles, which was at Antioch.

In which decretal epistle, 1. The false apostles who started this controversy are sharply reproved.

2. Paul and Barnabas, for their courage, and constancy, are highly commended.

3. Judas and Silas are mentioned to testify that these decrees were not forced nor counterfeited.

4. That it would conduce much to their advantage to have these decrees duly observed.

Observe, 3. The divine authority of these decrees: they were dictated and directed by the Holy Ghost: It seemed good to the Holy Ghost, and to us.

That is, it seemed good unto us, being directed and assisted by the Holy Ghost, whose inspiration and conduct we have followed, not to impose unnecessary things upon you.

Where note, That the Holy Ghost is against imposing unnecessary things as necessary, and making them the terms of church-communion.

Here are four things imposed; namely, abstaining from meats offered to idols, from blood, from fornication, and from things strangled: but they are called necessary things. Two of them, to wit, abstaining from fornication and from things offered to idols, were of a simple and absolute necessity; the other two, namely, abstaining from things strangled, and from blood, were of an accidental, and temporary necessity, for the present time, and to avoid giving scandal to the weak Jews, till they should be better informed, and better understand their liberty in Christ; for afterwards St. Paul showeth that no creature of God is unclean, but that unto the pure all things are pure. 1Ti 4:4 ; Tit 1:15