We have then, in the first part of The Faerie Queene, four of the seven deadly sins depicted in the more important passages of the four several books; those sins being much more elaborately and powerfully represented than the virtues, which are opposed to them, and which are personified in the titular heroes of the respective books. The alteration which made these personified virtues the centre each of a book was probably part of the reconstruction on the basis of Aristotle Ethics.
The nature of the debt to Aristotle suggests that Spenser did not borrow directly from the Greek, but by way of modern translations.