The Light - 24:21
O you who believe, do not follow the steps of Satan. Whoever follows the steps of Satan, he commands to himself immorality and evil. Had it not been for Allah´s grace and mercy upon you, none of you would have been purified for ever. But Allah purifies those who will. Allah is All-Hearing, All-Knowing.
Allah's grace for us to cleanse ourselves from the filth that Satan throws at us, from our sins.
The Family Of Imran/3:164
Allah was gracious in sending from among the believers a messenger who recited to them His Verses, purified them and taught them the Book and wisdom. But they were in manifest error before!
The Cow/2:151
Indeed, We have chosen and sent from among you a messenger who will recite to you My signs, purify you, teach you the Book and wisdom, and inform you of what you do not know.
The Congregation - Friday/62:2
He it is Who has sent a Messenger from among the Ummah, one of their own, who recites to them His verses, purifies them and teaches them the Book and wisdom. Before that they were in manifest error.