That's not what they're saying Cronos.... Rather that when God sees/views/Judges us He sees the Righteousness of His son Jesus who fulfilled God's Law and Righteous requirements 'on our behalf' and it's Jesus's life, death, suffering and Resurrection which fully and completely satisfied all of God's requirements we could not and never can fulfill before our Holy God....both now and forever more.....It is finished.
Caww, what you said is about Christ forgiving us an our sins and that we are forgiven and saved by grace.
On that all of the sides here - whether evangelical or Adventist or Modalist or orthodox - agree on.
What the two were saying was “you have been norn again then the Spirit of God abides in your spirit and IT cannot sin because God is there. The flesh? Not so much, it is trained to sin.” —> i.e. that you don’t sin, your body does
and
“The born again spirit of a person cannot sin. The soul can continue to choose sin, however.”
—> i.e. that you don’t sin, your soul does.
This is passing the buck — as you said correctly, Jesus’ sacrifice forgives our sins — but note “our sins” - we are still sinners.
The idea of saying “hey, I didn’t sin, my body/soul did, not my spirit” is not showing humbleness to the fact that we are saved by grace