Lets try to understand EACH of us are part of this body. And we all see in part.
I agree yet not. Well.. I once read in the margin of the word said.. if our heart convicts us we wont get anything from God. I got up and told God I QUIT! I said my heart convicts me 24/7. I reach for the door and He asks "what is righteousness?" I start to turn and say "righteousness is right standing with God. He then asks "how do you get righteousness?" I answer "by believing in Jesus". It was like a dam broke and I could see. I cried and cried...
What you say is true. There is no sin Jesus didnt die for. Yet.. our SPIRIT was made new. Our spirit which was born of God can not does not sin. As it is written in scripture. But we still can sin. If we read Rev Jesus to the seven angels of the seven churches.. then and also through out time.
Yeshua did die for all of the worlds sins. Who is going to tell them? It is finished. Yet.. that sinner MUST repent. The price has been paid for all. But they still must repent. To do a 180. We of Christ in this flesh still sin. Yes.. that sin we just did.. we just ADDED to the price He paid. But.. we STILL must confess our sins. I love my kids. There is nothing they can do that will stop my love or them being my kids. Yet.. they can still hurt me and those around them.
If we confess our sin.. He is faithful and just to forgive us our sins and to forgive us and cleans us from all unrighteousness. Our SPIRIT was made new..not this flesh. We can still freely SIN. And even though that SIN was paid for.. we must confess it. How many times do we read our brother Paul talking about himself being a sinner still? "This
is a faithful saying, and worthy of all acceptation, that Christ Jesus came into the world to save sinners; of whom I am chief."
How can PAUL get this wrong miss it? I mean he didnt say I WAS.. he said "I am". yes.. price was paid ONCE and forever. But.. you are STILL free and can sin today and miss it and open doors to things you should not. And that sin that YES was paid for has STILL a price which is death. That sin you did today freely.. must be confessed. It that sin.. has no hold on me..nor will it in any way keep me from living forever with my lord

...we still can hurt Him.. we still can add to that sin He paid for.