The pattern in Paul spoken of has nothing to do with sin.
What are you talking about?
Paul demonstrates in Romans 7 that he struggles with sin. And then in 1 Timothy 1:15 he referes to himself as the "Chief of Sinners" not just a sinner, but the "Chief of Sinners".
And now in 1 Corinthians 15:52, 53, 54. He tells us that we are corrupt.