I think you need to prove that the Bible teaches that one needs to repent of all their sins. And since you can't point to a verse that says that why should any one believe you?
I can refute you with the truth easily.
Matthew 9:2
Some men brought to him a paralytic, lying on a mat. When Jesus saw their faith, he said to the paralytic, “Take heart, son; your
sins are forgiven.”
Matthew 9:5
Which is easier: to say, ‘Your
sins are forgiven,’ or to say, ‘Get up and walk’?
The paralytic's SINS were forgiven, not sin.
Mark 11:25
And when you stand praying, if you hold anything against anyone, forgive him, so that your Father in heaven may forgive you your
sins. ”
Luke 7:47
Therefore, I tell you, her many
sins have been forgiven—for she loved much. But he who has been forgiven little loves little.”
Luke 7:48
Then Jesus said to her, “Your
sins are forgiven.”
FROM THE LORD ON HOW TO PRAY!---
Luke 11:4
Forgive us our
sins, for we also forgive everyone who
sins against us. And lead us not into temptation. ’”
James 5:16
Therefore confess your
sins to each other and pray for each other so that you may be healed. The prayer of a righteous man is powerful and effective.
1 Peter 2:24
He himself bore our sins in his body on the tree, so that we might die to
sins and live for righteousness; by his wounds you have been healed.
2 Peter 1:9
But if anyone does not have them, he is nearsighted and blind, and has forgotten that he has been cleansed from his past
sins.
1 John 1:9
If we confess our
sins, he is faithful and just and will forgive us our sins and purify us from all unrighteousness.
1 John 2:12
I write to you, dear children, because your
sins have been forgiven on account of his name.
Acts 2:38
Peter replied, “Repent and be baptized, every one of you, in the name of Jesus Christ for the forgiveness of your
sins. And you will receive the gift of the Holy Spirit.