Seems to me that you are saying that after one had been converted, that somehow such ignorant, unintentional sins exist no longer and could not happen to a convert. I don’t think that is the case.
Basically I'm thinking that before rebirth, we are just waves blown by the sea, we are dead, living dead men's lives. We simply followed the lusts of our flesh and our minds, because we didn't have any other option.
We didn't have the awareness of what sin is that we do in Christ. We committed sin both with and without thought. God selected a certain nation, and gave a list of Laws and remedies which included a remedy for sins committed unintentionally.
Sin in transgression of the Law, and transgression of the Law can be deliberate or not. But I don't think that's the only definition of sin. We also know that which is not of faith is sin. So anything I'm doing outside of faith in God is therefore sin, even things that may seem good to everyone around me.
Like giving money to a poor man, can that be sin? I think it is if I knew that God wanted me to give it to my horrible sister in law or whatever, for instance.
We have our ideas for our lives, and God has His ideas for our lives. If I follow my ideas instead of His, then this is, to me, sin. A much more general approach.
Living in trust in Jesus means I expect His ways to be good, and effective, and all that, so I do those things. If I stop trusting, I stop doing what He leads me to do.
Galatians says that if we walk in the Spirit, we will not do the works of the flesh. So to me, the key here is to remain walking in the Spirit. When I see flesh-works in my life, this means I need to return to walking in the Spirit. It's not so much about, I have to stop yelling at my wife, though that is completely valid. But I don't stop yelling at her by becoming "more zealous" to make that happen, though that can appear to help. The true solution, in my thinking, is remember God's promises, and believe them.
I think the tendency in us is that we see what our flesh still does, we own these for ourselves as if we were still guilty before God - Oh the Scandal of Grace! - though we are not. But we see ourselves defined by what we see instead of what we believe, and that very act is to leave faith in favor of sight.
I can fight and struggle and overcome my propensity to yell at my wife, and I think that's how we often try to address sin.
But what I've come to learn is that the power of sin disappears when I am communing with God. And communing with God comes in realizing how fully reconciled to God that I am. That He no longer even holds me guilty for the sins I may be committing Right Now! With no impediment my spirit flies into His arms!
So there is no impatience, or lack of gentleness, or any such thing, only the peace and love and joy which come from God. And when my wife says that uninformed thing that may have set me off, I respond with what is in me - God's love.
Someone who is not settled in the permanence of their reconciliation to God, well, just to say, many I've known demonstrate the thinking that they have to become zealous for good works, and try to change their behavior to prove to God their fervor, or to buy God's love by being good, or some such. It becomes all about the sins.
But being settled on the matter of my salvation, that I've been redeemed because God did it, it was what He wanted, and now He has what He set out to have - me. Such as I am. But they say, there's no accounting for taste! But then, God already knows what He's forming me into, I only see what looks to me like wreckage.
But again, faith, not sight.
Anyway, these are some of my thoughts on the topic.
Much love!