They are talking about
whoring after other Gods.
Hence the frequent prophetic diatribes against altars in high places, the Canaanite cult of Baal, and «
whoring after other gods.»
The melancholy refrain of the Old Testament — «And the children of Israel forsook the Lord, the God of their fathers, and followed other gods, the gods of the peoples who were round about them... they played
the whore after other gods and bowed themselves down to them» — applies perfectly to the dominant trends in the Catholic Church, at least in the Western world.
Not exact matches
The Protestant Reformers, it is true, discovered the worst idolatries of all within the Catholic Church, much as the prophets of old accused the children of Israel of
whoring after other, pagan
gods; but they did not doubt that Christianity alone worshiped the true
God without taint of idolatry.
Nations are jealous: they don't want their citizens
whoring after foreign
gods, and the worst form of such infidelity is to exhibit primary loyalty to some polity or institution
other than the one you're a citizen of.