Nor does original sin cease to be sin because it was committed by us neither voluntarily nor knowingly; for it is enough that τὸ ἄνομον [to anomon, the lawless thing] is in our nature

However, this is certain, that God doth not infuse it. Souls receive neither purity nor impurity from him, but only their naked essence, and the natural powers and properties flowing therefrom. He doth not infuse any impurity into men; for he cannot be the author of sin, who is the revenger of it. … As a pure and holy God, he cannot infuse any impurity into the souls of men; and as a just and righteous God, he may and doth withhold from, or create them void and destitute of, that holiness and righteousness which was once their happiness and glory.

We believe that through the disobedience of Adam original sin is extended to all mankind; which is a corruption of the whole nature and a hereditary disease, … and which produces in man all sorts of sin, being in him as a root thereof, and, therefore, is so vile and abominable in the sight of God that it is sufficient to condemn all mankind. … Not that they should rest securely in sin, but that a sense of this corruption should make believers often to sigh, desiring to be delivered from this body of death.

We say, then, that man is corrupted by a natural viciousness, but not by one which proceeded from nature. In saying that it proceeded not from nature, we mean that it was rather an adventitious event which befell man, than a substantial property assigned to him from the beginning.

In order to account for a sinful corruption of nature, yea, a total native depravity of the heart of man, there is not the least need of supposing any evil quality, infused, implanted, or wrought into the nature of man, by any positive cause, or influence whatsoever, either from God, or the creature; or of supposing, that man is conceived and born with a fountain of evil in his heart, such as is any thing properly positive.