Disobedience; Satan through the serpent; expulsion

This commandment the human being did not keep, but was disobedient to God, being led astray by the angel who, because of the great gifts of God which he had given to the human being, was envious and jealous of him, and both brought himself to nought and made the human being sinful, persuading him to disobey the commandment of God. (serpent deceived; envy of the devil)

So the angel, becoming by his falsehood the author and originator of sin, himself was struck down, having offended against God, and the human being he caused to be cast out from Paradise. And because through the guidance of his disposition he apostatized and departed from God, he was called Satan, according to the Hebrew word — that is, Apostate; but he is also called Slanderer (Devil). (Satan; devil / diabolos)

Now God cursed the serpent which carried and conveyed the Slanderer; and this malediction came on the beast himself and on the angel hidden and concealed in him, even on Satan. () And humankind he put away from his presence, removing them and making them dwell on the way toward Paradise at that time; because Paradise does not receive the sinful.