'Fornication' in the Bible

But that we write unto them, that they abstain from pollutions of idols, and from fornication, and from things strangled, and from blood.

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.

As touching the Gentiles which believe, we have written and concluded that they observe no such thing, save only that they keep themselves from things offered to idols, and from blood, and from strangled, and from fornication.