'Idol sacrifices' in the Bible

but that we write to them, that they abstain from pollutions of idol [sacrifices], and from whoredom, and from what is strangled, and from blood.

To be abstaining from idol sacrifices, and from blood, and from what is strangled, and from fornication, - From which, if ye keep yourselves, ye shall prosper. Fare ye well.

'And concerning those of the nations who have believed, we have written, having given judgment, that they observe no such thing, except to keep themselves both from idol-sacrifices, and blood, and a strangled thing, and whoredom.'