The Preparation (τῆς παρασκευῆς) Simply Means "Friday"

[Secret Alias]

He knows also the enigmas (τὰ αἰνίγματα) of the fasting of those days -- I mean the Fourth and the Preparation (τῆς παρασκευῆς). For the one has its name from Hermes, and the other from Aphrodite (Wednesday and Friday). He fasts in his life, in respect of covetousness and voluptuousness, from which all the vices grow. For we have already often above shown the three varieties of fornication, according to the apostle -- love of pleasure, love of money, idolatry. He fasts, then, according to the Law, abstaining from bad deeds, and, according to the perfection of the Gospel, from evil thoughts.[7.12.75.2]