You are presenting Scripture that is solely about Believers and the Kingdom of God being present with them because we are FILLED WITH THE HOLY SPIRIT!
His Dying was so EVERYONE could be a part of this Kingdom of God that is present among Believers.
You have knowledge but you ain't very DEEP at all..
Look, this is not difficult - it is an either-or situation. If all sin has been fully remitted as you say, then there can be no sin remaining to be judged of since Christ already paid the price for it. If anyone can be judged for sin, then Christ could not have paid for it.
You can't have it both ways - that Christ paid for all sin of everyone and in-spite of that, there still remains sin not covered by it.
Once paid for, it is gone, eternally - it no longer exists to be assessed.
My point is that Christ's offering was not, nor could have it been for everyone, and hence, those not covered will face judgment.
[Psa 103:12 KJV] 12 As far as the east is from the west, [so] far hath he removed our transgressions from us.