The JEWISH Christians were to continue to observe feast days, etc. Gentile Christians had only to refrain from things strangled, the eating of blood, food offered to idols, and fornication. See Acts chapter 15. (Of course, the two commandments given by Jesus was to be observed by all).
This argument is another justification by modern Christians to disregard God's wishes. Think about it: Were these THE only things expected of gentiles who became Christians? Were they allowed to:
Rob? Steal? Murder? Covet? Dishonor their mother and father?Worship idols?
None of these things are mentioned in the letter so by the same token it MUST have been okay for them to do this.
Clearly the judgement in Acts 15 wasn't limiting gentile Christians on just those things mentioned in the letter. So what gives?
Well it just so happens that the things listed in the letter were the most common things that pagan gentiles were into. They were being instructed to stop these things immediately because they were the most offensive to Jewish Christians. They were expected to learn the rest EVERY sabbath:
Act 15:20 but that we write to them to abstain from things polluted by idols, from sexual immorality, from things strangled, and from blood.
Act 15:21 For Moses has had throughout many generations those who preach him in every city, being read in the synagogues every Sabbath."
Notice what's being said here. Paul is saying that they will learn about Moses and what's in the scriptures on every sabbath.