We are perfected by believing God and Trusting in the Atonement He provided for our salvation.. When all our sins are being forgiven they are forgotten by God and we are as white as wool even while we are a scarlet red in sins..
Isaiah 1: KJV
18 "Come now, and let us reason together, saith the LORD: though your sins be as scarlet, they shall be as white as snow; though they be red like crimson, they shall be as wool."
Isaiah 43: KJV
25 "I, even I, am He that blotteth out thy transgressions for mine own sake, and will not remember thy sins."
Psalms 103: KJV
10 "He hath not dealt with us after our sins; nor rewarded us according to our iniquities. {11} For as the heaven is high above the earth, so great is his mercy toward them that fear him. {12} As far as the east is from the west, so far hath he removed our transgressions from us. {13} Like as a father pitieth his children, so the LORD pitieth them that fear him."