If God has delivered you from your past sin, and does not hold you accountable for them, why should they hold you back in any way? As we all know, the past cannot be changed. But what we are NOW can be changed. I believe all of God's judgments are remedial. He doesn't punish us for our past sins; he corrects our present character. ---- just like a good parent. A good parent doesn't punish his child for what he did a year ago, even if that parent just found out yesterday. Rather, he corrects him for what he did recently, in the hope that his character will change and his behaviour improve.
For the Lord disciplines him whom he loves, and chastises every son whom he receives. It is for discipline that you have to endure. God is treating you as sons; for what son is there whom his father does not discipline? If you are left without discipline, in which all have participated, then you are illegitimate children and not sons. Besides this, we have had earthly fathers to discipline us and we respected them. Shall we not much more be subject to the Father of spirits and live? For they disciplined us for a short time at their pleasure, but he disciplines us for our good, that we may share his holiness. For the moment all discipline seems painful rather than pleasant; later it yields the peaceful fruit of righteousness to those who have been trained by it. Hebrews 12:6-11 RSV