"You should not look at what the person used to do, rather you should look at what kind of person they are today. The one who gets bogged down about people's pasts, is just like Iblees (shayataan) who said to Allaah (subhaanahu wa t'aala), 'You created me from fire and you created him from clay'."

--Shaykh Ul-Islam Ibn Taymiyyah Al-Minhaaj volume 2 page 430.