This is very easy to explain; but not all that easy to believe because it deals with one of the supernatural aspects of Christianity that doesn't get much press these days. But first off I would caution you to avoid using Rom 8:1 to invalidate John 3:18, John 3:36, John 5:24, John 6:47, John 10:28, Rom 8:2, and 1John 5:13.
I never use a scripture to invalidate another scripture.
I do however show other scriptures to balance our understanding of the truth, the whole truth, not just the part that validates a doctrine of man, which usually encourages a believer to be weak and ineffective as a child of God.
Jesus was holy and requires His followers to be holy and to refrain from being defiled by the world.
Holy, consecrated, set apart.
These are the the words I would ask you to study to show yourself approved.
20 For if, after they have escaped the pollutions of the world through the knowledge of the Lord and Savior Jesus Christ, they are again entangled in them and overcome, the latter end is worse for them than the beginning. 2 Peter 2:20
Thank God the Lord enabled me to be free from being "overcome" when I was entangled again in the pollutions of the world.
Thank you Lord for your Grace. :amen
JLB