We are forgiven for our sin when we confess our sins.
1Jo 1:7-10 (ESVST) . 8 If we say we have no sin, we deceive ourselves, and the truth is not in us. 9 If we confess our sins, he is faithful and just to forgive us our sins and to cleanse us from all unrighteousness. 10 If we say we have not sinned, we make him a liar, and his word is not in us.
To be set free from sin and it's controlling power, we must die.
Rom 6:6-7 (ESVST) . 7 For one who has died has been set free from sin.
Like Paul said,"I die daily".
We must die alright. We must die to our selfishness.
Jesus told those who claim to believe in him the truth as to why we sin or do not sin. But many would rather twist a few words spoken to them by persons like John or Paul and interpret in a way that discounts what Jesus told us. Do you even know what he told us?
He told us with no if, ands, or buts, (John 14:21a) "he who is having my commands, and is keeping them, that one it is who is loving me," ........ (John 14:24a) "he who is not loving me, my words doth not keep;.."
Jesus thus told us all that our failure to obey him and the word that he bears of the Father is due to a lack of love. Throughout his ministry he made similar comments:
Matthew 6:19-21 "Treasure not up to yourselves treasures on the earth, where moth and rust disfigure, and where thieves break through and steal, but treasure up to yourselves treasures in heaven, where neither moth nor rust doth disfigure, and where thieves do not break through nor steal, for where your treasure is, there will be also your heart."
Matthew 22:37-40 "And Jesus said to him, "Thou shalt love the Lord thy God with all thy heart, and with all thy soul, and with all thine understanding -- this is a first and great command; and the second is like to it, Thou shalt love thy neighbour as thyself; on these -- the two commands -- all the law and the prophets do hang."
Jesus showed us many examples that it is a problem with what people love that causes them to be the sinners they are:
John 3:19 "And this is the judgment, that the light hath come to the world, and men did love the darkness rather than the light, for their works were evil.."
Matthew 6:5 "And when thou mayest pray, thou shalt not be as the hypocrites, because they love in the synagogues, and in the corners of the broad places -- standing -- to pray, that they may be seen of men; verily I say to you, that they have their reward."
Matthew 6:24 "None is able to serve two lords, for either he will hate the one and love the other, or he will hold to the one, and despise the other; ye are not able to serve God and Mammon."
Mark 12:38-40 "and he was saying to them in his teaching, "Beware of the scribes, who will in long robes to walk, and love salutations in the market-places, and first seats in the synagogues, and first couches in suppers, who are devouring the widows' houses, and for a pretence are making long prayers; these shall receive more abundant judgment."
Luke 11:43 "Woe to you, the Pharisees, because ye love the first seats in the synagogues, and the salutations in the market-places."
John 12:25 "he who is loving his life shall lose it, and he who is hating his life in this world -- to life age-during shall keep it;"
John 12:43 "for they loved the glory of men more than the glory of God."
Paul likewise identified the problem as being with a person's heart and the choices they make as to what they love:
Romans 2:5 "but, according to thy hardness and impenitent heart, thou dost treasure up to thyself wrath, in a day of wrath and of the revelation of the righteous judgment of God.."
Romans 12:7-9 "or ministration -- "In the ministration!" or he who is teaching -- "In the teaching!" or he who is exhorting -- "In the exhortation!" he who is sharing -- "In simplicity!" he who is leading -- "In diligence?" he who is doing kindness -- "In cheerfulness." The love unfeigned: abhorring the evil; cleaving to the good;"
Romans 13:10 "the love to the neighbour doth work no ill; the love, therefore, is the fulness of law."
I could go on and on with the evidence that Jesus and all of the Bible writers taught that we sin due to a lack of love. And not that we do not know how to love, but that we choose to love things God hates and we find a way to rationalize those things as at least understandable so that we don't have to feel too bad about our neglect.
That evil inherited sin doctrine has caused a great deal of this ignorance.