The Blessing of No Condemnation is Reserved

There is therefore now no condemnation for those who are in Christ Jesus - Romans 8:1

Paul does not say Christians are free from condemnation because they are sinless; it is because they are in Christ. "No condemnation" is not a universal blessing. It is reserved for those who have been united spiritually with Christ through faith. We must be careful to resist the false sentimentality that beckons us to give false assurance to non-Christians simply because they are sincere, nice, religious, or believe in God.

To be "in Christ" by faith alone means, among other things, that his righteousness has been reckoned or imputed to you. It means you are united with him in a spiritual covenant. It means there is an almost indefinable mystical oneness or spiritual fellowship with the Lord that you share every moment of life. To put it as simply as possible, to be "in Christ" means you are saved by him and are in vibrant spiritual union with him.

Sam Storms, Kept For Jesus