Tertullian

“ The essence of fraud, I take it, is, that any should seize what is another’s, or refuse to another his due; and, of course, fraud done toward man is a name of greatest crime. Well, but idolatry does fraud to God, by refusing to Him, and conferring on others, His honours; so that to fraud it also conjoins contumely. But if fraud, just as much as fornication and adultery, entails death, then, in these cases, equally with the former, idolatry stands unacquitted of the impeachment of murder. ”

“ The principal crime of the human race, the highest guilt charged upon the world, the whole procuring cause of judgment, is idolatry. [1] For, although each single fault retains its own proper feature, although it is destined to judgment under its own proper name also, yet it is marked off under the general account of idolatry. Set aside names, examine works, the idolater is likewise a murderer. ”

“ Thus it comes to pass, that in idolatry all crimes are detected, and in all crimes idolatry. Even otherwise, since all faults savour of opposition to God, and there is nothing which savours of opposition to God which is not assigned to demons and unclean spirits, whose property idols are; doubtless, whoever commits a fault is chargeable with idolatry, for he does that which pertains to the proprietors of idols. ”