III. (2) Their fancy about virtues proceeding from God refuted.
Under the second head is displayed their foolish and empty fancy about the issue of certain virtues from God which he began to possess, and which were posterior to God Himself in His own essence. In this again they support the Arians' mistake, who say that the Father is prior to the Son, because there was a time when He was without the Son: and became the Father then when He begot the Son. But as the Catholic Church abhors them, so also does it abhor these who think that what is of the same essence was ever wanting to God. For it is as wicked to speak of Him as progressing as it is to call Him changeable. For increase implies change as much as does decrease.
Source: Letters (New Advent)