'Sexual Immorality' in the Bible

But I have a few things against you: you have some there who hold the teaching of Balaam, who taught Balak to put a stumbling block before the sons of Israel, to eat food sacrificed to idols and to practice sexual immorality.

Nevertheless I have this against you, that you tolerate the woman Jezebel, who calls herself a prophetess and is teaching and beguiling my servants to practice sexual immorality and to eat food sacrificed to idols.

nor did they repent of their murders, their sorceries, their sexual immorality or their thefts.